Heating and cooling that fits your home.
Whether something stopped working or you’re planning a new system, we size it properly, give you honest pros and cons, and let you decide.
Sales, service, and repair under one roof.
We install and repair the equipment that heats and cools homes across the D.C. area, from a single mini-split to a full system replacement.
Heating
- Gas furnaces
- Electric heat pumps and air handlers
- Water-source heat pumps
- Whole-house humidifiers
Cooling
- Central air systems
- Ductless mini-split systems
- Packaged air conditioning
- VRF systems
Installed the right way
- Sized so it isn’t oversized or undersized
- Airflow set for even temperatures room to room
- Installed carefully, the first time
We’ll tell you plainly which makes sense.
A whole-house system often lasts somewhere around 10 to 14 years. Before that, a repair is usually the smart call. After that, it depends on what failed and how often it’s been happening.
We won’t push you toward a new system. We’ll show you what we found and what each option costs, and the decision is yours.
How old is it?
Age alone isn’t a reason to replace, but it changes how much a repair is worth.
How often is it failing?
One repair in ten years is normal. Three in two years is a pattern.
Is the house comfortable?
Hot and cold rooms, humidity, and noise can point to sizing or ductwork problems.
What will it cost to run?
Newer equipment can be noticeably cheaper to operate than an aging system.
Keep small problems small.
Our heating and cooling maintenance agreement comes standard with two inspections a year and can be customized to your home. Members save on regular maintenance, get a discount on service calls, and get priority when they need us.
We also offer agreements for plumbing, boilers, and tankless water heaters. Ask us about current pricing when we get in touch.
Each inspection includes checks like
- Testing safety controls
- Tightening electrical connections
- Measuring airflow and temperature difference
- Checking refrigerant pressure
- Cleaning the outdoor unit, coils, and drains
- Treating the drain pan against algae
- Replacing standard air filters
- Calibrating the thermostat
Questions people ask us
My AC is running, but the house is still warm. What’s wrong?
It could be a clogged filter, a frozen coil, low refrigerant, or a failed part in the outdoor unit. Our AC not cooling checklist covers what you can safely check first.
Is a heat pump a good fit for my home?
Often, especially when an older AC needs replacing anyway. It depends on your ductwork, your electrical service, and how well the house holds heat. We look at all three before we recommend one.
What are mini-splits good for?
Rooms the central system doesn’t reach well: additions, finished attics, sunrooms, garages, and homes without ductwork. Each room gets its own quiet indoor unit and its own temperature.
How often should my system be serviced?
Twice a year is a good rhythm: cooling in the spring and heating in the fall. Many manufacturer warranties expect regular maintenance, so keep your service records.
Repair, replace, or tune up?
Tell us what the system is doing, or what you’re planning. We’ll contact you to talk it through.
Great crew to have. Very professional and work hard to replace my HVAC system. Improved the layout and overall configured. We are very glad to have selected JMPlumbing for the complete install of our HVAC system.
Request heating or cooling service
Takes about a minute. We’ll contact you to confirm availability.