Hot water heat is best for your comfortSeattle radiant floor heat

With its even natural heat, hot water heat is the most comfortable heat you could possibly have in your Seattle area home. Nothing delivers comfort better than radiant heating because it heats your body and objects, not the air.

An added bonus is that hydronic (radiant) heat is also the most efficient way to warm your home so you’ll likely save money too.

What is hydronic or hot water heat?

Also called radiant heat, hydronic heating is a method of heating that uses hot water or steam, instead of air. A hydronic heating system takes advantage of water's superior conductive properties to heat your home more efficiently by heating the objects in it-not the air.

It depends largely on the delivery of heat directly from a hot surface to the people and objects in the room via the radiation of heat.  It's the same effect you feel when holding a mug of coffee in your hands or the warmth of a hot stovetop element from across the room.

When installing your system, you can decide whether you want one thermostat to control the entire house or have a thermostat in every room for the ultimate in individual control.

Benefits of using Hot-Water Heat in your Seattle home


No other heating system can compare with the even, natural warmth of heating with water.


Dust, air contaminants, bacteria, and low humidity levels, all problems associated with forced-air heating, are nonexistent in a home with a properly designed hydronic heating system.


Heating with hot water will save you 5 to 20% over forced-air heat.


You decide the level of control.  From heating the entire house with one thermostat to setting each room's temperature individually, the choice is yours.


The options to heat your home are almost limitless; choose from old-fashioned cast-iron radiators, modern wall panels, baseboard heaters, radiant floor or ceiling heat, heated towel bars and tub/shower heat.

Hydronic Heat vs. Forced Air Systems

Forced Air system is a type of heating system in which heated air is blown by a fan to rooms and since warm air rises and cold air sinks, it's always coldest on the floor.  Our body temperature is warmest at our head with circulation being poorest at our feet, which is why we are most comfortable in a room that is warm at the floor and slightly cooler at head level. 

It's easy to see why a forced air system produces a much lower comfort level than a hot-water heating system and why a forced air furnace has the highest monthly energy costs of any heating system.

heat distribution

Heat distribution with forced air is uneven. Most of the air is concentrated at the ceiling, where it is lost to the outdoors. With hot water heat, it is warmer closer to the floor where heat is needed. So you are more comfortable at a lower thermostat setting, thus saving on your fuel bills.

Expert installation makes all the difference

Whatever hydronic heating system you select, be assured that the trained craftsmen at Carlson Mechanical will install it expertly and efficiently. There’s many delivery system options (radiant floor heating, baseboard heaters, cast-iron radiators for Victorian-style home) and they’ll work with you to select the best for your home and lifestyle.

An important part of any heating system is the controls, which will be designed to enhance your comfort, keep your heating costs low and ensure that your investment will last long and operate trouble free. Select Carlson Mechanical and soon, you and your family will be enjoying the most even natural heat available.

We had electricians over here doing work and they said it was the nicest looking heating installation (from the electrician's perspective, of course) they'd seen. They said most of the hvac people don't seem to quite know what they're doing on that front. So, consider yourselves complimented, albeit indirectly, by one of your professional peers.

- Rick

Ah, the pleasure of heat and hot water!  Lynda is convinced the house heats faster!  We are pleased in every way with your work. Riley and Dennis were a pleasure to have in the house and Riley put the frosting on his copper/brass solder sculpture by leaving the work space in immaculate condition. Please use us for an enthusiastic reference any time. Thank you!

- Lynda and Doug, Seattle

Radiant Floor & Ceiling Heat

Floor Heat

With radiant floor heat, the warmth stays down around the floor where it is needed most.

The systems circulate warm water through flexible tubing that can be installed underneath virtually any type of flooring material—wood, tile, even carpet.

Radiant ceiling heat is perfect for remodeling projects, additions and for heating the upper floors of your home. Tubing and heat emission plates are attached to ceiling joists or sheetrock so the ceiling radiates heat to people and objects just like radiant floor heat.

How do you deliver radiant heat?

There are several delivery system options so you can choose the one right for your home.

Cast IronCast-iron radiators

Cast-iron radiators are suitable for both residential and commercial applications.  Cast-iron radiators supply a continuous flow of heat.

The radiant heat combined with convected heat creates a warm comfortable environment. It shields outside walls and windows to stop cold air from infiltrating-right where it starts.

After the boiler has run full cycle, the hot water in the radiator sections continues to emit gentle heat.  The end result is a cozy room with less than a two-degree temperature variance from floor to ceiling.

BaseboardBaseboard heaters

Baseboards provide space heating in both residential and commercial applications. The baseboard is inconspicuous, but an effective distributor of heat by disbursing heat, both horizontally and vertically.

A baseboard panel does not blow air or stir up dust and their operation is virtually silent.

PanelPanel Radiators

Panel radiators combine art and science to deliver a modern, attractive heat with incredible comfort at a reasonable price.

Panel radiators offers a clean solution to heating problems as it does not blow air or stir up dust and the operation is virtually silent.  Both Buderus and Runtal offers a variety of panel-style radiators for your home or business.

Heated TowelHeated Towel Bars

Make getting out of the shower more comfortable with these attractive heated towel bars.  They keep your bathroom dry and free of mildew, germs and musty smells.

Each towel rack acts as a radiator-an adjustable source of heat for the room.  Their low profile fits minimal space requirements (depth 4”) and they coordinate easily with any bathroom décor.