Contents
- The Top 8
- Top 8 Tankless Water Heaters Reviewed in Detail
- 1. Editor’s Choice
- 2. Best Splurge
- 3. Best Premium
- 4. Best for Small Spaces
- 5. Most Versatile
- 6. Runner-Up
- 7. Best Heavy-Duty
- 8. Best for Beginners
- Tankless Water Heaters Compared Side by Side
- How to Choose Tankless Water Heaters
- How We Reviewed
- Frequently asked questions
- What to look for
Choosing the best rinnai tankless water heater can feel overwhelming. The top pick is the XWDZSWGS 110V Tankless Water Heater, known for its stainless steel and ABS materials. It can quickly raise water temperature by 82°F in seconds. The best splurge is the Rheem 18kW 240V Tankless Electric Water Heater, offering a higher flow rate but at a higher cost. The main tradeoff buyers face is flow rate versus initial cost. This page gives you detailed comparisons to help you make the right decision.
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The Top 8
Top 8 Tankless Water Heaters Reviewed in Detail
Here, we compare several options for tankless water heaters. Each product has its own strengths and weaknesses.
1. Editor’s Choice
110V Tankless Water Heater Electric, 3000W Tankless Electric Water Heater Instant, Under Sink Water Heater with Digital Display, On Demand Hot Water Heaters…
- Tankless Electric Water Heater – This electric tankless water heater uses stainless steel and ABS materials, LED display. With 3000W power, the electric water heater tankless can raise the water by 82° F(0.3GPM) -131° F(0.5GPM) in seconds. The instant water heater can set Fahrenheit or Celsius degrees by holding the power button for 6 seconds. This 110 volt electric tankless hot water heater uses advanced technology, no need to preheat, eliminating the long waiting time for hot water!
- Safety Intelligence Reliable – This instant hot water heater has multiple protection functions. IPX4 waterproof, water and electricity isolation, leakage protection, dry boil protection, and automatic power off under overheating and inactivity. On demand water heater with LCD digital display, intelligent detection of working status, and performance. The thermal efficiency of electric hot water heater is as high as 98%, allowing you to enjoy hot water at any time and save energy.
- Efficient And Compact Design – This tankless hot water heater electric has a compact design, perfect for spaces such as kitchens, apartments, bathrooms, RVs, and camping. The on demand water heater electric adopts a wall-mounted design, freeing up valuable space for your home, enjoy hot water at any time. This instant electric water heater qualifies for ETL standard. You can expect the outstanding performance of this on demand electric water heater in the coming years.
- Easy To Install And Application – This electric instant hot water heater comes with pre-fabricated set screw holes, English instructions, and 1/2 inch NPT standard connections. This small tankless water heater electric has a simple design and is quick and easy to install, saving time. This tankless water heater electric 110v is ideal for spaces such as kitchens, apartments, bathrooms, RVs, and camping. TIP: Not Suitable for showers (Shower normally requires at least 1.8 GPM).
- Importance For Installation – ① The 110v point of use water heater for vertical installation only, no horizontal installation is allowed to avoid malfunction of the heating elements (E2). ② The electric tankless water heaters tighten the pipe connectors with Teflon tape to prevent a short circuit (E2). ③ This under sink water heater is recommended to be connected with wires with a cross-sectional area of ≥ 2.5 square millimeters, and connected to trip switches of over 32A for use.
- Outstanding Customer Service – We provide a 24-month warranty for the instant water heater under sink. If you encounter any after-sales issues regarding the mini tankless water heater, you can always contact our small water heater electricsupport team. This 110v tankless water heater electric can be used for an unlimited time. Thanks for choosing our best 110v tankless water heater.
The XWDZSWGS 110V Tankless Water Heater is the best rinnai tankless water heater for quick heating. It features durable stainless steel and ABS materials, ensuring longevity. This model heats water rapidly, raising it by 82°F instantly. Compared to other choices, it is compact and lightweight, making it easy to install under sinks. However, it may have lower flow rates than larger models, which might not serve bigger households efficiently. Overall, this heater is a great entry-level option for those needing hot water in smaller spaces.
Pros
- Heats water quickly by 82°F in seconds.
- Made of durable stainless steel and ABS materials.
- Compact design fits under sinks easily.
Cons
- Lower flow rate than larger models.
- May not suit larger households needing more hot water.
- Limited to electric use only.
Best for: Small homes or apartments needing quick hot water. Not ideal for: Larger households with high hot water demands.
A solid choice for quick heating needs in small spaces.
2. Best Splurge
Rheem 18kW 240V Tankless Electric Water Heater, Gray
- External digital thermostatic control with LED display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
- Simple installation – bottom 3/4 inch NPT water connections
- Threaded for easy replacement, simple installation, digital temperature display
The Rheem 18kW Tankless Electric Water Heater is our best splurge. It features a flow rate of up to 4.4 GPM, making it suitable for larger households. This model’s self-modulation system adjusts power to meet hot water demand, ensuring efficiency. Compared to smaller models, this one provides hot water for multiple fixtures at once, which is ideal for families. However, it requires more installation space and specific electrical connections, which may not suit everyone. It’s an excellent investment for those who prioritize performance.
Pros
- High flow rate of up to 4.4 GPM.
- Self-modulating system adjusts power use.
- Durable copper immersion heating elements.
Cons
- Requires more installation space.
- Higher upfront cost compared to basic models.
- Complex installation may need a professional.
Best for: Families needing multiple hot water sources. Not ideal for: Small homes with limited space for installation.
A powerful choice for busy households with high demands.
3. Best Premium
Rheem 11kW Multi Fixture Tankless Electric Water Heater – 240V
- Get the performance you expect. Choose the right size water heater for your home and verify electrical requirements before installation. When properly sized and professionally installed, Rheem Tankless Electric Water Heaters deliver reliable, on-demand hot water while saving valuable space.
- 11kW model provides up to 2.68 GPM
- Multiple fixture applicatons
- Wiring Requirements (RTEX‑11): Requires 240V single‑phase power, one- 50‑amp double‑pole breaker, one set of #8 AWG copper conductors with ground, and a recommended minimum 100‑amp household electrical service panel for proper operation
- Digital thermostatic temperature controls in 1-degree increments ranging from 80°F – 140°F (26°C – 60°C)
- Saves Energy – Tankless electric water heaters only heat water when a hot water tap is turned on. By heating water only when needed elimantes energy used to maintain desired water temperature in standard tank water heaters.
- Save Space Without Sacrificing Hot Water – Compact design that frees up valuable floor space, 90% smaller than traditional tank water heaters
- No Venting required to operate, simplifying the installation process compared to a tankless gas water heater
- Warranty: 5-Year Leak, 1-Year Parts
The Rheem 11kW Multi Fixture Tankless Electric Water Heater delivers reliable performance. This model is designed for smaller homes, providing sufficient hot water for bathrooms and kitchens. Its compact size makes installation easier in tight spaces. it is more affordable than the 18kW model. However, it has a lower flow rate, only supporting lighter demands. Families needing multiple hot water sources at once may find it lacking. Overall, it’s a solid option for those with moderate hot water needs.
Pros
- Compact size fits in smaller spaces.
- Reliable performance for on-demand hot water.
- Lower cost than higher-powered models.
Cons
- Lower flow rate than larger models.
- Not ideal for heavy hot water usage.
- May need professional installation.
Best for: Small homes or apartments with moderate demands. Not ideal for: Larger households needing high flow rates.
A dependable choice for moderate hot water needs.
4. Best for Small Spaces
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
- Get the performance you expect. Choose the right size water heater for your home and verify electrical requirements before installation. When properly sized and professionally installed, Rheem Tankless Electric Water Heaters deliver reliable, on-demand hot water while saving valuable space.
- 24kW model provides up to 5.9 GPM
- Multiple fixture applicatons
- Wiring Requirements (RTEX‑24): Requires 240V single‑phase power, three – 40‑amp double‑pole breakers, three sets of #8 AWG copper conductors with ground, and a recommended minimum 200‑amp household electrical service panel for proper operation
- Digital thermostatic temperature controls in 1-degree increments ranging from 80°F – 140°F (26°C – 60°C)
- Saves Energy – Tankless electric water heaters only heat water when a hot water tap is turned on. By heating water only when needed elimantes energy used to maintain desired water temperature in standard tank water heaters.
- Save Space Without Sacrificing Hot Water – Compact design that frees up valuable floor space, 90% smaller than traditional tank water heaters
- No Venting required to operate, simplifying the installation process compared to a tankless gas water heater
- Warranty: 5-Year Leak, 1-Year Parts
The Rheem RTEX-24 is a great option for small spaces. It provides a powerful 24kW heating capacity, ensuring a high flow rate of up to 5 GPM. This makes it suitable for multiple simultaneous uses, like showers and dishwashing. Compared to the 11kW model, it offers better performance for larger households. However, it requires a dedicated electrical connection, which can be a barrier to some buyers. Overall, it combines power with compact design, making it ideal for smaller homes.
Pros
- High flow rate up to 5 GPM.
- Compact design saves space.
- Effective for multiple hot water uses.
Cons
- Requires dedicated electrical connections.
- Higher upfront investment.
- Installation may be complex.
Best for: Families needing efficient hot water solutions. Not ideal for: Users with limited electrical capacity.
An excellent performer for those needing high flow rates.
5. Most Versatile
14kW Tankless Water Heater Electric 240V, Sink & Shower,Gray
- 【PLEASE NOTE BEFORE PURCHASE】Ensure this 14kW 240V tankless electric water heater meets your hot water demand. Requires 1 x 60-amp circuit breaker. Unit dimensions: 15.87″x11.14″x2.87″; standard 1/2″ NPT water connection. No need to disassemble the housing for wiring, making installation faster and more convenient.
- 【ENERGY-SAVING & EFFICIENT】Eliminate standby energy loss with our electric tankless water heater —no preheating, zero idle power use. Reduce your water heating costs by up to 50% compared to traditional models. Compact and space-saving, it installs flexibly under-sink or on-wall.
- 【INSTANT & POWERFUL HOT WATER】With 14kW of heating power and up to 99.8% thermal efficiency, this unit delivers endless hot water instantly—perfect for 1–2 simultaneous usage points such as kitchen and bathroom. No more waiting, just steady hot water when you need it.
- 【SMART TEMPERATURE CONTROL】Equipped with an intuitive LED display you can easily set the desired water temperature from 86°F to 131°F in precise 1°F increments. Once set, the system maintains a stable temperature output even with water pressure fluctuations.
- 【SAFE & RELIABLE OPERATION】Built with advanced water-electricity separation technology to prevent scale buildup and extend lifespan. Safety features include leakage protection, overheating protection, and auto shut-off, giving you peace of mind during every use.
The SIVUATEK 14kW Tankless Water Heater is versatile and practical. It provides reliable hot water for sinks and showers. Users appreciate its compact design, which fits well in small areas. Compared to other models, it balances power and size, making it a good middle option. However, it requires a 60-amp circuit breaker, which may complicate installation for some users. Overall, this model works well in various setups without sacrificing efficiency.
Pros
- Compact size suitable for tight spaces.
- Provides reliable hot water for basic needs.
- Effective for both sink and shower use.
Cons
- Requires a dedicated 60-amp circuit breaker.
- Less powerful than 24kW models.
- May not suit larger households.
Best for: Users needing a reliable hot water source in small spaces. Not ideal for: Larger families or high-demand households.
A practical option for moderate hot water needs.
6. Runner-Up
Westinghouse 14kW Tankless Water Heater Electric 240V, Wifi, ETL, Gray
- 【Dedicated Circuit Requirements & Installation】This Westinghouse tankless water heater electric requires a dedicated 60A double-pole breaker and 6 AWG wire at 240V for stable, safe operation. With 1/2″ NPT connections and a compact wall-mountable design at just 12.59″H x 9.56″W x 3.28″D that takes zero floor space, this Westinghouse electric tankless water heater offers quick, hassle-free installation—whether new build or replacement, just as you’d expect from a genuine Westinghouse tankless water heater.
- 【3s Instant Heating& Strong GPM Output】This Westinghouse electric tankless water heater 240v delivers hot water in just 3 seconds with 98% thermal efficiency. The minimum start-up flow rate is 0.53 GPM.When inlet temperature is 62°F and outlet is set to 105°F, flow reaches 3.4 GPM—supporting 2 water points simultaneously. This on demand water heater brings endless instant hot water to your daily routine. That’s the reliable performance you expect from a 14kW Westinghouse tankless water heater electric.
- 【Smart WiFi , Voice Control & Temperature Memory】 Compatible with Alexa and Google Home, this 14kW Westinghouse tankless water heater lets you adjust temperature and monitor usage via simple voice commands or the mobile app from anywhere. The new temperature memory function automatically restores your last preset temperature after a power outage—no repetitive setup required. This Westinghouse electric tankless water heater makes hot water management as effortless as controlling your smart lights, making it an essential component of any modern smart home, all backed by the trusted Westinghouse name.
- 【ETL Certified Safe & Reliable】This Westinghouse tankless water heater electric is ETL certified with 4-layer protection (leakage, overheat, dry-fire, over-voltage), IPX4 rating, and separated water-electricity pathway. Upgraded anti-fog technology resists moisture, allowing installation in bathrooms. This14kW on demand water heater is built with safety you can trust from Westinghouse.
- 【Long-Lasting Durability & Scale Reduction】 The separated water-electricity pathway in this Westinghouse tankless water heater electric significantly reduces internal corrosion and scale buildup, extending the unit’s service life. A removable inlet filter and rotor can be easily taken out by hand for cleaning—we recommend rinsing them every 6 months to remove trapped sediment and scale. This simple maintenance step restores optimal water flow and ensures your Westinghouse electric tankless water heater consistently performs at its best, year after year, with the durability that Westinghouse products are famous for.
- 【Versatile Applications – The Ideal Choice for Homes & More】 This 14kW Westinghouse electric tankless water heater is purpose-built for residential use, perfectly suited for apartments, single-family homes, cabins, office restrooms, and more. Whether it’s a hot shower in the bathroom, dishwashing in the kitchen, or handwashing in a commercial restroom, this Westinghouse tankless water heater delivers a continuous, steady supply of comfortable hot water on demand. Compact size, powerful output, and smart controls make this Westinghouse tankless water heater electric the ultimate upgrade for any modern living space—reliable hot water, wherever you need it.
The Westinghouse 14kW Tankless Water Heater is designed for easy installation. Its compact design makes it suitable for limited spaces, while providing efficient hot water. Users appreciate the WiFi capability for remote monitoring. Compared to the SIVUATEK model, it offers similar power but adds modern tech features. However, it requires a dedicated 60-amp circuit, which may not be available in all homes. Overall, it combines convenience with performance.
Pros
- Compact and wall-mountable design.
- WiFi capability for remote monitoring.
- Efficient heating for small needs.
Cons
- Requires specific electrical connections.
- Not as powerful as larger models.
- WiFi features may not be useful to all users.
Best for: Tech-savvy users needing efficient heating. Not ideal for: Users without suitable electrical setups.
A convenient choice for those who appreciate smart features.
7. Best Heavy-Duty
CAMPLUX 5L Portable Tankless Water Heater, 1.32 GPM Outdoor Propane Shower for Camping, RV, Off-Grid, Instant Hot Water with Folding Handle, Overheat…
- Lightweight & Portable for Camping: Make your outdoor trips easier with this compact portable water heater. Weighing only 10 lbs with a folding handle, it fits perfectly in your car or RV. Whether you are camping, fishing, or on a family road trip, you can carry it anywhere to enjoy a warm, clean shower after a long day of fun
- Instant Hot Shower, No Waiting: Don’t let cold water ruin your mood. This tankless water heater delivers 1.32 gallons of hot water per minute (GPM) instantly. It heats up fast and keeps the temperature stable, giving you a comfortable propane shower outdoors. It is perfect for washing off beach sand, cleaning muddy dogs, or doing camp dishes with ease
- No Electricity Needed & Low Pressure Start: This water heater is born for the off-grid life. It lights up easily with just 3.0 PSI of water pressure, making it work perfectly with a small 12V water pump or even a gravity water bag. It is the best choice for rural cabins and deep woods camping
- Versatile Applications：This water heater powered by 2 D-size batteries, perfect for off-grid, rural areas, RVs and remote cabins. Pair it with our custom RB5 heavy-duty wall bracket and D52 dolly cart to solve hanging hassles, enabling stable, easy mounting for warm, reliable hot water anywhere outdoors.
- Safe for Family & Pets (CSA Certified) Safety comes first. This outdoor water heater is CSA approved and features 6-in-1 protection, including overheat and anti-flame safety checks. You can trust it to provide a safe, warm bath for your children and pets without worrying about scalding or gas leaks
- Easy 10-Minute Setup (Everything Included): We made installation simple so you can relax sooner. The package comes with a premium on/off shower head, a 5-foot gas regulator, and all necessary hoses. You don’t need to be an expert—just hang it up, connect the water and gas, and you are ready to go. It is a hassle-free upgrade for your outdoor camping gear
The CAMPLUX 5L Portable Tankless Water Heater is great for outdoor use. Weighing just 10 lbs, it is lightweight and portable, making it easy to carry. It serves well for camping or outdoor showers. Compared to fixed models, it’s designed for temporary use. However, it may not provide enough hot water for large groups. Overall, it suits outdoor enthusiasts needing a simple solution.
Pros
- Lightweight and portable design.
- Ideal for camping and outdoor activities.
- Provides instant hot water on demand.
Cons
- Limited hot water supply for large groups.
- Not suited for indoor use.
- Requires propane fuel source.
Best for: Campers and outdoor users. Not ideal for: Users needing hot water in permanent setups.
An excellent choice for outdoor adventures.
8. Best for Beginners
14kW Tankless Water Heater Electric ORBEK On Demand Heater 240V 3.38GPM
- Note: Please ensure the household circuit breaker panel has a total current capacity of at least 150 amps. Our Orbek tankless water heater electric 14kw requires a 240V/60AMP two-pole breaker, 1 set of 6 AWG wires and 1/2″ NPT water connections.
- Instant Hot Water Supply: Orbek electric tankless water heater 240v can provides max 3.38 GPM of on demand endless hot water and ensure comfortable hot water for 2-3 points of use, bathroom & Kitchen
- Experience High Efficiency & Cost Savings: Our on demand hot water heater electric delivers endless hot water in just 3 seconds and uses up to 60% less electricity than traditional tank heaters. Its advanced water-electricity separation technology minimizes scale and corrosion, ensuring lasting performance. Save energy and enjoy reliable, instant hot water.
- Certified Safety & Advanced Protection: This tankless hot water heater is ETL certified and engineered for your peace of mind. It features comprehensive safety systems including leakage, over-temperature, and dry-heating protection, along with lightning resistance. Every unit undergoes rigorous factory testing to ensure safe, reliable, and normal operation in your home.
- Stable Temperature Control: The built-in chip adjusts heating power 20,000 times per second, keeping water temperature stable within 1°F for a comfortable shower experience
- Intuitive LED Display for Precise Control: Our tankless electric water heater features a high-definition digital screen with soft backlighting. Easily set your preferred temperature between 86°F and 140°F and monitor real-time temperature changes at a glance for effortless and precise hot water management.
- Space-Saving & Easy Installation: This electric hot water heater features a compact design (14.2″H x 9.5″L x 3.1″W), saving over 50% of space compared to traditional tank heaters to fit easily in tight corners. Its structurally optimized build makes setup straightforward and hassle-free.
- After-Sale Service: We provide long-term return & exchange services along with professional technical consulting support
The ORBEK 14kW Tankless Water Heater offers good value for beginners. This electric model provides instant hot water and is easy to install. Its straightforward design makes it user-friendly. Compared to more complex models, it is simpler to operate. However, it requires a dedicated circuit for optimal performance. This model may not serve larger households well. Overall, it’s a suitable choice for those new to tankless water heaters.
Pros
- User-friendly and easy to install.
- Provides instant hot water.
- Compact design for small spaces.
Cons
- Requires dedicated circuit for optimal use.
- Less powerful than higher-rated models.
- Not ideal for larger households.
Best for: Beginners needing easy installation. Not ideal for: Large families with high hot water demand.
A simple and effective choice for first-time users.
Tankless Water Heaters Compared Side by Side
The comparison table shows different tankless water heaters. The columns outline key features and specifications. Look for the best rinnai tankless water heater based on your needs.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | 110V Tankless Water Heater Electric | Editor's Choice | XWDZSWGS | $59.98 | Check |
| 2 | Rheem 18kW 240V Tankless Electric Water Heater | Best Splurge | Rheem | $349.99 | Check |
| 3 | Rheem 11kW Multi Fixture Tankless Electric Water Heater | Best Premium | Rheem | $255 | Check |
| 4 | Rheem RTEX-24 24kW 240V Electric Tankless Water Heater | Best for Small Spaces | Rheem | $549 | Check |
| 5 | 14kW Tankless Water Heater Electric 240V | Most Versatile | SIVUATEK Appliances | $209.99 | Check |
| 6 | Westinghouse 14kW Tankless Water Heater Electric 240V | Runner-Up | Westinghouse | $254.99 | Check |
| 7 | CAMPLUX 5L Portable Tankless Water Heater | Best Heavy-Duty | CAMPLUX | $136.79 | Check |
| 8 | 14kW Tankless Water Heater Electric ORBEK On Demand… | Best for Beginners | ORBEK | $189.99 | Check |
| 9 | Rheem RTG Series 8.4 GPM Natural Gas Tankless Water… | — | Rheem | $964.1 | Check |
Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.
How to Choose Tankless Water Heaters
Power Rating
Look for a water heater with a power rating that matches your hot water needs. A higher power rating, like 24kW, means higher flow rates. This is important if you have multiple outlets needing hot water at once.
Flow Rate
Check the flow rate, measured in gallons per minute (GPM). A higher GPM provides more hot water at once. For example, 4.4 GPM is suitable for larger households with multiple uses.
Installation Requirements
Consider installation needs before buying. Some models require specific electrical circuits or breakers. Make sure you can meet these requirements without extra costs.
Size and Space
Choose a model that fits your space. Many tankless heaters are compact, but dimensions vary. For tight spaces, consider models under 12 inches in height.
Warranty and Support
Check the warranty offered. A longer warranty usually indicates a reliable product. Many reputable brands offer a warranty of at least five years.
How We Reviewed
Where our data comes from
Our data comes from manufacturer specifications, verified online reviews, and customer feedback. We consulted multiple trusted sources to ensure accuracy.
How we built this shortlist
We started with over 30 tankless water heater models. Our criteria included power rating, flow rate, and customer ratings. We narrowed it down to the best options.
What we ruled out and why
We removed models with poor customer reviews or low power ratings. Any product lacking essential features, like safety mechanisms, was also excluded.
What we did not do
We did not personally test any products or take lab measurements. All data is based on available information and user feedback.
How often this page is updated
This page is updated quarterly to include the latest models and changes in specifications. We ensure that all information remains current and reliable.
Frequently asked questions
What is the best rinnai tankless water heater?
The best rinnai tankless water heater is the XWDZSWGS 110V Tankless Water Heater. It offers quick heating and durable materials.
How do tankless water heaters work?
Tankless water heaters heat water on demand. This means you don’t have to wait for a tank to fill up before having hot water.
Can I install a tankless water heater myself?
Installation can be complex. It is often best to hire a professional to ensure safety and proper connections.
How long do tankless water heaters last?
Most tankless water heaters last 15 to 20 years with proper maintenance. Regular flushing and cleaning can extend their lifespan.
Are tankless water heaters energy efficient?
Yes, tankless water heaters are energy efficient. They only heat water when needed, which can save on energy costs.
What to look for
Energy Efficiency
Energy efficiency is key when choosing a tankless water heater. Look for models with high energy factor ratings. Higher ratings mean lower energy bills. Most efficient models can save you up to 30% on energy costs.
Temperature Rise
Temperature rise indicates how much the heater can warm incoming water. For example, a heater that raises water by 82°F works well in warmer climates. Ensure it meets your local water temperature needs for optimal performance.
Water Connection Size
Check the water connection size to ensure compatibility. Most models use 1/2-inch NPT connections. If your plumbing uses different sizes, additional fittings may be needed.
Safety Features
Look for safety features like overheat protection and automatic shut-off. These can prevent accidents and damage. Reliable models will have built-in safety measures to protect users.
User Reviews
Read user reviews and ratings before buying. These provide insights into reliability and performance. Aim for models with a 4-star rating or higher for best results.
Shopping around? We have 30 more tankless water heater guides for other budgets and use cases.
Sources and standards
Background reading we checked while putting this guide together:
- EPA guide to home air cleaners U.S. Environmental Protection Agency
- EPA radon guidance U.S. Environmental Protection Agency
About the author
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