Heating & cooling in College Park, Maryland.
College Park runs from 1940s cape cods in Calvert Hills to new mid-rise apartments along Baltimore Avenue, with a heavy layer of student rental housing in between. The HVAC problems change block by block. Home Comfort Air Services has worked on all three kinds of building.
A short drive, not a long haul.
We work out of Silver Spring, so College Park is regular territory rather than an outlying call. We know the equipment that is common here and the way these houses were built.
HVAC searches in College Park cover 20740 and 20742 and come from homeowners, landlords and property managers alike. Home Comfort Air Services is family owned, based in Silver Spring, and a straight run out University Boulevard to Route 1. We service central air, furnaces, heat pumps and water heaters including tankless across Old Town, Calvert Hills, Lakeland, Berwyn, Hollywood, Daniels Park and College Park Woods.
We are NATE certified, an ACCA member, BBB accredited with an A+ rating and Carrier authorized, and we participate in Pepco and BGE residential rebate programs. Emergency service is available 24 hours a day, including during move-in and move-out weeks when timing is not negotiable.
What College Park weather actually does to HVAC systems.
College Park sits on the flat Anacostia headwaters plain, and the Route 1 corridor through the middle of town is mostly pavement, which holds heat into the evening long after the shaded streets in Calvert Hills and Old Town have cooled off. Summer here is the standard Washington pattern: highs near 90 degrees through July, dew points in the low 70s, and afternoon thunderstorms that drop the temperature ten degrees and then hand the humidity right back.
Winter mostly sits in the 20s and 30s. Once or twice each season an arctic push takes overnight lows into the single digits, and freezing rain along Baltimore Avenue and Paint Branch Parkway is a regular January event.
The academic calendar makes that climate harder on College Park buildings than it would be elsewhere. Student rentals sit empty and barely conditioned through July and August, then fill up the last week of August with every window shut and every system asked to run at design conditions on day one. Failures cluster there. The same houses empty out again over winter break, thermostats get pushed down toward 50 degrees, and condensate traps and pipes in unheated basements freeze.
Mid-rise apartment buildings along Baltimore Avenue have the opposite issue: they are tightly built and mechanically ventilated, so when a fan coil or a ventilator goes down the unit gets humid fast, especially in the shoulder weeks of May and September when the building may still be in heating mode while the outdoor air is at 75 degrees and saturated.
The College Park housing stock, and what it asks of an HVAC contractor.
College Park housing splits into distinct pieces. Around the campus edge in Calvert Hills, Old Town and Lakeland you get 1920s through 1950s bungalows, cape cods and small colonials, most on their second or third HVAC system and many converted into student rentals with bedrooms carved out of attics and basements.
North of campus in Hollywood, Berwyn, Daniels Park and College Park Woods the stock is later, mostly 1950s and 1960s ramblers and split-levels on quieter streets with more owner occupancy. Along Baltimore Avenue the last fifteen years have added large mid-rise apartment buildings with fan coil and packaged systems. Each of those three categories fails in its own way.
In the older near-campus houses, the recurring issue is that a cape cod built for a family of four now houses five or six students, each with a space heater or a window unit, on ductwork that was retrofitted into a house never designed for it. Attic bedrooms in Calvert Hills and Old Town are the worst offenders: one supply register, no return, and a knee wall full of uninsulated flex duct baking all afternoon in August.
Basement bedrooms have the mirror problem in winter. In Hollywood and Berwyn the houses are more conventional, but a lot of the equipment dates to the 1990s and early 2000s, which means R-22 systems that are now expensive to keep charged and worth evaluating for replacement rather than another repair.
Landlords make up a large share of the calls in College Park, and their math is different from an owner occupant: they want the honest remaining life of the equipment, what a failure in mid-semester would cost them, and whether a ductless mini split can solve a room that ductwork never reached. We answer those questions the same way either way.
The problems we fix most often in College Park.
Work in one area long enough and the same problems keep turning up. These are the ones we run into most often in Prince George's County, and what we look at first when we get the call.
- Attic bedrooms in Calvert Hills and Old Town rentals overheating because a single supply register was run through an uninsulated knee wall.
- R-22 systems from the 1990s in Hollywood and Berwyn losing charge slowly, where refrigerant cost now outweighs the value of another repair.
- Systems that sat idle all summer failing on the first hot week of the fall semester, when they are finally asked to run at full load.
- Frozen condensate traps and split water lines in unheated basements over winter break, discovered only when tenants come back in January.
- Fan coil units in Baltimore Avenue mid-rise apartments running dirty coils and clogged drain pans because nobody has service access scheduled.
- Window units and portable heaters added by tenants that quietly mask a central system already failing, until the central system stops entirely.
Same-day service across every neighborhood.
We cover every neighborhood listed below. Regular appointments run Monday through Friday 7:30 AM to 7 PM and Saturday 9 AM to 4 PM, and emergency service is available 24 hours.
The College Park HVAC contractor with real local depth.
A lot of HVAC companies treat College Park as a stop between Beltsville and DC. We treat it as home territory, because our office in Silver Spring is a few miles away and we have spent years in these specific houses. That matters when the right answer on a service call depends on knowing the house is a 1948 cape cod with retrofitted ductwork and four tenants, not a modern build.
Yosef started this company in 2014 after working as a service technician, and the rule since then has been to explain the diagnosis before quoting the work. Family owned, NATE certified, ACCA member, Carrier authorized, BBB A+, with financing available. Maryland HVACR license MD70918.
Everything we do, in College Park.
Everything we do is available throughout College Park. Our main services link to a page written specifically for this city, covering what that job involves in these houses.
Questions from College Park homeowners.
What should a College Park landlord do between tenants?
Turnover is the only window when the house is empty, so use it. Replace the filter, clear and flush the condensate drain, wash the outdoor coil, and run both heating and cooling long enough to watch them work under load. Note any window units or space heaters left behind, because those usually mean the central system was not keeping up for the last tenant.
How do you fix an overheating attic bedroom in a rental?
One supply register run through an uninsulated knee wall cannot hold an attic bedroom in July. Insulating and air sealing the knee walls and roof line comes first, since that is where the heat is arriving. After that the room needs its own capacity, and a correctly sized ductless head is usually simpler and more effective than forcing more air up an existing run.
My 1990s system uses R-22, is another repair worth it?
Usually not, once it is losing charge. R-22 is no longer produced, so the refrigerant itself has become the expensive part, and a system old enough to use it is near the end of its mechanical life anyway. On Hollywood and Berwyn houses the honest math is often to stop buying refrigerant and put the money toward a matched replacement instead.
How should I set the thermostat in a house empty all summer?
Do not shut the system off. A closed up College Park house in August will sit at high humidity, and that is how you get mold, warped floors and a smell waiting for everyone in late August. Leave cooling running at a setback temperature in the low eighties, or use a thermostat with a humidity setting. It costs far less than the damage does.
How do I protect a vacant rental over winter break?
Leave the heat on at a real setback rather than off. Unheated basements around campus freeze condensate traps and split water lines, and nobody finds it until tenants return in January. Set the thermostat near 55 degrees, confirm the furnace actually fires before the house empties, and use a thermostat that can send a low temperature alert to your phone.
What can a Baltimore Avenue apartment owner do about a fan coil?
The equipment in those mid rise buildings is a fan coil or packaged unit in a closet, and the failures are almost always dirty coils and clogged drain pans rather than dead compressors. Getting service scheduled on a regular basis is most of the answer. Anything touching the building loop, the risers or exterior work goes through management, so check the rules before planning a replacement.
Tenants added window units, what does that tell me?
That the central system stopped keeping up and nobody called about it. Window units and portable heaters mask a failing system until it quits entirely, and they load circuits never designed for them. Treat them as a diagnostic signal: have the central system checked for airflow, refrigerant charge and duct leakage, and ask the tenants which rooms drove them to buy the units.
Is a permit required to replace a system in College Park?
Yes. Replacing heating or cooling equipment in Prince George's County is permitted mechanical work and is inspected, and that applies to rental houses just as it does to owner occupied ones. Rental licensing inspections are a separate process handled by the city and county. Keep the permit and inspection paperwork with your property records, since it is the simplest proof the work met code.