Boilers and radiators are our home turf.
Cast-iron radiators in a D.C. row house, a condensing boiler in Bethesda, a combi in Fairfax. We work on all of it, and honestly, we love it.
Can my boiler be repaired?
Often, yes. Plenty of boilers just need a part, a cleaning, or a system that’s set up properly. Here’s how we decide, and we’ll walk you through every step.
Is it safe?
Cracked heat exchangers, venting problems, or any sign of carbon monoxide come first. If it can’t be made safe, we’ll tell you.
Are parts still available?
Parts for many older boilers are still made. For some they aren’t, and that changes the math.
What does the repair cost against the boiler’s age?
A modest repair on a sound boiler is usually worth it. Once a boiler is past about 15 years old, it’s worth pricing a replacement too.
Is the rest of the system healthy?
Pumps, zone valves, the expansion tank, and the radiators all affect how a boiler runs. Sometimes the fix isn’t the boiler at all.
Every kind of hydronic heat.
Boilers
- Traditional copper and cast-iron boilers
- High-efficiency condensing gas boilers
- Combination (combi) boilers for heat and hot water
Radiators & radiant
- Hot-water baseboard radiators
- Steam radiators
- Radiant heating systems
Older homes
- Historic buildings and row houses across D.C. and nearby
- Repairs that respect original radiators and piping
One unit, or two?
A combi boiler heats your home and makes hot water on demand, replacing a boiler and a separate water heater. It’s a popular swap when both are getting old.
| Feature | Boiler + water heater | Combi boiler |
|---|---|---|
| How it works | Boiler heats the home; a tank or separate heater makes hot water | One unit does both, heating water as you use it |
| Space | Two pieces of equipment | Compact and wall-mounted |
| Good fit | Homes with heavy hot-water use at the same time | Homes that want space back and are replacing both |
| Plan for | A familiar, simpler replacement | Proper sizing, venting, and gas supply |
Washington Gas rebates
| Qualifying install | Virginia | Maryland |
|---|---|---|
| Combi boiler | $750 | $775 |
We’re a verified Washington Gas participating contractor, and we handle the rebate paperwork for you.
Rebate terms set by Washington Gas. Available to qualifying Virginia and Maryland Washington Gas customers; equipment and eligibility rules apply.
Questions people ask us
My radiators are cold at the top. What does that mean?
On a hot-water system, that usually means trapped air, and bleeding the radiator often fixes it. If it keeps coming back, there may be a pressure or expansion-tank problem worth a look.
Why does my boiler keep losing pressure?
The usual suspects are a small leak somewhere in the system, a pressure relief valve that’s letting go, or an expansion tank that has lost its charge. Topping it up only hides the problem.
Do you work on steam heat?
Yes. We install and service steam radiators as well as hot-water baseboard and radiant systems, including in older and historic homes.
Is a high-efficiency boiler worth it?
Condensing boilers use less fuel than older non-condensing models, which can lower heating bills. Whether it pays off for you depends on your current boiler, your home, and how long you plan to stay. We’ll give you straight numbers.
Tell us about your boiler.
The brand and age help if you know them. If not, “it’s the big one in the basement” works too.
In December last year, we had old boiler and hot water tank removed and replaced with an on-demand water heater/boiler Combo unit by JM plumbing.
Request boiler or radiator service
Takes about a minute. We’ll contact you to confirm availability.