Boiler (Hot Water/Steam)
Radiant heating through radiators or in-floor systems for even comfort.
About Boiler (Hot Water/Steam)
Boilers heat water (or create steam) that circulates through radiators, baseboard heaters, or in-floor radiant systems. Common in the Northeast and Midwest, boilers provide comfortable, even heat without the dry air and dust circulation of forced-air systems. Modern high-efficiency boilers reach 95-98% AFUE.
Pros
- Very even, comfortable radiant heat
- No blowing air (less dust, no dry air)
- Long lifespan (20-30+ years for cast iron)
- Can also provide domestic hot water (combi boilers)
- No ductwork required
- Compatible with in-floor radiant heating
- Quieter than forced-air systems
Cons
- Higher installation cost than furnaces
- Heating only (no cooling)
- Slower to heat rooms than forced air
- Pipes can freeze in unheated areas
- Radiators take up wall space
- More complex installation and repair
- Fewer contractors specialize in boilers
Best For
- Homes with existing radiator/baseboard systems
- New construction with radiant floor heating
- Allergy sufferers (no air blowing)
- Northeast and Midwest homes
- Luxury homes wanting even heat distribution
- Those who prefer quiet heating
Popular Boiler (Hot Water/Steam) Brands
Frequently Asked Questions
How long do boilers last?
Cast iron boilers can last 30-40+ years. Steel boilers typically last 15-25 years. High-efficiency condensing boilers last 15-20 years. Annual maintenance is key.
Boiler vs furnace - which is better?
Boilers provide more comfortable, even heat and better air quality. Furnaces are cheaper, heat faster, and are easier to pair with AC. Climate, existing infrastructure, and preferences determine the better choice.
What is a combi boiler?
A combination (combi) boiler provides both space heating and domestic hot water in one compact unit, eliminating the need for a separate water heater. Ideal for smaller homes with moderate hot water demand.
System Capabilities
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