Are Swellfort's technicians licensed and certified?

Yes. The company operates under Maryland HVACR contractor license #01-148326, held by owner Marvin Federico, with EPA Section 608 Universal certification #608U-2011-337194 for refrigerant handling. Gas piping work is performed under WSSC Water gasfitter license #GF-72241, which is the separate credential Prince George's County requires for gasfitting. Field technicians hold NATE certification in the specialties relevant to their role.

Will the same technician who quotes my system also install it?

Not always, and there is a reason. Load calculation, installation, and service are different skills. Your comfort advisor runs the Manual J and specs the equipment; the installation lead and crew handle ductwork, line sets, and commissioning; service technicians handle repairs. What stays constant across all three is the standard — every reading is measured and documented, and the person doing the work signs off on the numbers.

Why does Swellfort measure so much before giving a price?

Because in Prince George's County housing stock, symptoms lie. A second-floor bedroom that never cools can be a refrigerant charge problem, a static-pressure problem from undersized returns, a duct-leakage problem into an attic, or an oversizing problem where the system short-cycles. Those four causes have four different fixes at four different prices. The only way to know which one you have is to take readings — static pressure, temperature split, superheat, subcooling — before quoting.

Does Swellfort pull permits for the work its team does?

Every installation. Mechanical permits in Hyattsville and the surrounding municipalities are issued through the Prince George's County Department of Permitting, Inspections and Enforcement, and any gas piping work additionally requires WSSC Water gasfitter licensure. Our office manager pulls the permit before the crew arrives and schedules the inspection, and the permit number appears on your invoice.

What areas does the Swellfort team cover?

Our crew works out of the Riggs Building office in the 20783 corridor and covers Hyattsville, Chillum, Langley Park, Adelphi, Mount Rainier, and Riverdale Park, along with the surrounding Prince George's County communities. Because the office sits between Chillum and Langley Park, response times to the closest neighborhoods are typically the fastest in our service area.

Meet the Swellfort Heating & Air Conditioning Team

You can tell a lot about an HVAC company by what its technicians carry in a truck. A cheap outfit carries a thermostat and a sales tablet. A real one carries a manometer, a combustion analyzer, a micron gauge, and a set of gauges that get calibrated. Everyone on this crew carries the second set. The reason is simple: on a job off Queens Chapel Road or a rowhouse in Mount Rainier, the difference between a $180 fix and an $8,000 replacement usually comes down to whether someone bothered to take a reading. Here is who takes them.

Marvin Federico — Owner & Lead Contractor

Marvin holds Maryland HVACR contractor license #01-148326 and EPA Section 608 Universal certification #608U-2011-337194. He has worked residential and light-commercial systems across Prince George’s County since 2004 and founded Swellfort in 2015. On a service call he runs the diagnostic himself before anyone reaches for a part: static pressure at the air handler, temperature split across the coil, superheat and subcooling at the condenser. His rule for the crew is a single sentence — quote what the meter reads, not what the worst case might be. Gas work runs under his WSSC Water gasfitter license #GF-72241, since Prince George’s County licenses gasfitting separately from the state HVACR board.

[LEAD INSTALLER NAME] — Installation Lead

[LEAD INSTALLER NAME] runs the install crew and owns the part of the job most homeowners never see: the ductwork. Anyone can set a condenser on a pad. Getting 350 to 400 CFM per ton to actually reach a second-floor bedroom in a 1952 Hyattsville Hills split-level — through returns that were undersized when Eisenhower was president — is the hard part. [HE/SHE] is [NATE CERT / YEARS] and carries the manometer that decides whether a comfort complaint is a refrigerant problem or a static-pressure problem. Nine times out of ten in this housing stock, it is static pressure.

[SERVICE TECH NAME] — Service Technician

[SERVICE TECH NAME] handles the no-cool and no-heat calls — the August compressor failures and the January pressure-switch faults. [HE/SHE] is EPA 608 [TYPE] certified and [NATE / YEARS DETAIL]. The skill that matters here is not swapping parts; it is refusing to swap the wrong one. A condenser that hums and won’t start looks identical whether the capacitor reads 9 microfarads or the compressor windings are dragging. [SERVICE TECH NAME] meters both before touching a wrench, which is why callback rates on [HIS/HER] repairs stay low.

[COMFORT ADVISOR NAME] — Comfort Advisor & Load Calculations

[COMFORT ADVISOR NAME] runs the Manual J load calculations that keep this company from selling oversized equipment. In Climate Zone 4A, where a design wet bulb near 76°F means a large share of the summer load is moisture rather than heat, oversizing is the single most common mistake in the trade — it is why so many homeowners have a new system that hits setpoint and still feels damp. [COMFORT ADVISOR NAME] measures the house room by room, separates the sensible and latent loads, and specs equipment to a sensible heat ratio the home actually needs. [ADDITIONAL CREDENTIAL / BACKGROUND DETAIL.]

[OFFICE MANAGER NAME] — Office Manager & Dispatch

[OFFICE MANAGER NAME] is the person who answers when you call (227) 249-1654, pulls the Prince George’s County DPIE permit before the truck rolls, and files the EmPOWER Maryland rebate paperwork so it lands on your invoice instead of getting forgotten after the sale. [ADDITIONAL DETAIL.] In a trade where “we’ll handle the permit” often means “we hope the inspector never comes,” [OFFICE MANAGER NAME] makes sure the permit number is real and on file.

How We Hire

We do not hire technicians who quote before they measure. That sounds obvious. It is not how most of this industry runs. Every person on this crew has been trained to treat a diagnosis as a set of numbers — static pressure in inches of water column, temperature split in degrees, superheat and subcooling in degrees, capacitance in microfarads, combustion in parts per million — and to show those numbers to the homeowner. When the readings say your equipment is fine and the problem is a $40 part, we tell you that, even though the bigger sale was sitting right there.

Frequently Asked Questions

Are Swellfort’s technicians licensed and certified?: Yes. The company operates under Maryland HVACR contractor license #01-148326, held by owner Marvin Federico, with EPA Section 608 Universal certification #608U-2011-337194 for refrigerant handling. Gas piping work is performed under WSSC Water gasfitter license #GF-72241, which is the separate credential Prince George’s County requires for gasfitting. Field technicians hold NATE certification in the specialties relevant to their role.
Will the same technician who quotes my system also install it?: Not always, and there is a reason. Load calculation, installation, and service are different skills. Your comfort advisor runs the Manual J and specs the equipment; the installation lead and crew handle ductwork, line sets, and commissioning; service technicians handle repairs. What stays constant across all three is the standard — every reading is measured and documented, and the person doing the work signs off on the numbers.
Why does Swellfort measure so much before giving a price?: Because in Prince George’s County housing stock, symptoms lie. A second-floor bedroom that never cools can be a refrigerant charge problem, a static-pressure problem from undersized returns, a duct-leakage problem into an attic, or an oversizing problem where the system short-cycles. Those four causes have four different fixes at four different prices. The only way to know which one you have is to take readings — static pressure, temperature split, superheat, subcooling — before quoting. Guessing means either selling you a system you do not need or fixing the wrong thing.
Does Swellfort pull permits for the work its team does?: Every installation. Mechanical permits in Hyattsville and the surrounding municipalities are issued through the Prince George’s County Department of Permitting, Inspections and Enforcement, and any gas piping work additionally requires WSSC Water gasfitter licensure. Our office manager pulls the permit before the crew arrives and schedules the inspection, and the permit number appears on your invoice. Unpermitted work commonly surfaces during a home sale, when a buyer’s inspector flags it — we keep you clear of that.
What areas does the Swellfort team cover?: Our crew works out of the Riggs Building office in the 20783 corridor and covers Hyattsville, Chillum, Langley Park, Adelphi, Mount Rainier, and Riverdale Park, along with the surrounding Prince George’s County communities. Because the office sits between Chillum and Langley Park, response times to the closest neighborhoods are typically the fastest in our service area.

Contact the Swellfort Team — Hyattsville, MD

Whether you need a load calculation done right, a no-cool call answered on an August afternoon, or a furnace replacement quoted with the venting handled correctly, the crew that shows up will measure before it quotes. That is the whole difference.

Phone: (227) 249-1654
Address: Riggs Building, 7411 Riggs Rd #224, Hyattsville, MD 20783
Email: info@swellfortheatingairconditioning.xyz
Owner: Marvin Federico
Maryland HVACR Contractor License: #01-148326

Office Hours

Monday – Saturday: 9:00 AM – 5:00 PM
Sunday: Closed

Meet the Swellfort HVAC Crew | Hyattsville, MD Techs