Pentagon Air is a Maryland-licensed HVAC contractor based right next door in Bowie. We cover Upper Marlboro every weekday and we know the housing mix here well: large estate homes off Croom Road, established Marlton subdivisions, newer Westphalia builds, and the historic core around the courthouse. Every repair starts with a real diagnosis and a written estimate before any work begins.
Drive time from our Bowie shop
Upper Marlboro is only about 15 minutes from our Bowie shop. Stocked trucks are in the area Monday through Friday and most calls are handled in a single visit.
Local climate & home types
Upper Marlboro covers a big footprint, from the historic town to large lots near Croom and Rosaryville. That means we see everything from older oil-heat estate homes to brand-new construction with variable-speed heat pumps.
HVAC services we offer in Upper Marlboro
AC Repair
Central AC, heat pump, and mini-split repair across Upper Marlboro.
AC Repair in Upper MarlboroAC Installation
New central AC and ductless mini-split installs sized to your home's actual cooling load.
AC Installation in Upper MarlboroHeat Pump Services
Heat pump install and repair. A great fit for Upper Marlboro estate homes looking to move off propane or oil.
Heat Pump Services in Upper MarlboroFurnace Repair
Gas, electric, and propane furnace repair with full safety inspections.
Furnace Repair in Upper MarlboroThermostat Installation
Smart thermostat installs and configuration for any system type.
Thermostat Installation in Upper MarlboroDuctwork Services
Duct sealing, repair, and airflow balancing for large two-story Upper Marlboro homes.
Ductwork Services in Upper MarlboroCommon HVAC problems we fix in Upper Marlboro homes
Propane heat costs in Croom and Rosaryville
Large-lot homes on propane often spend a lot to heat. A modern heat pump conversion typically pays back quickly.
Multi-system imbalance in large homes
Estate homes with two or three systems often have one zone working overtime. Balancing fixes it.
Capacitor failures after summer storms
Upper Marlboro summer storms knock out capacitors all season. Usually a same-visit fix.
Aging Marlton-era systems
Original Marlton subdivision systems are at or past end of life. We walk through repair vs replacement honestly.
Historic-town homes without ductwork
Homes near the courthouse often have no good duct space. Ductless mini-splits solve it cleanly.
Upper Marlboro neighborhoods we serve
We cover all of Upper Marlboro and the surrounding Prince George's County area, including:
Marlton
Established subdivision with central AC systems and gas furnaces often at the replacement-decision age.
Lake Arbor
Single-family homes and townhomes where heat pump and thermostat upgrades are common requests.
Westphalia & Joint Base Andrews area
Newer construction with modern heat pumps, smart thermostats, and zoning systems.
Croom & Rosaryville
Large-lot estate homes, many on propane, often running dual-zone or multi-system setups.
Historic Upper Marlboro
Older homes around the courthouse where ductless mini-splits often beat a full ducted retrofit.
Beech Tree
Master-planned community with modern central systems and lots of smart thermostat installs.
ZIP codes covered: 20772, 20774. Landmarks nearby: Prince George's County Courthouse, Show Place Arena & Equestrian Center, Rosaryville State Park, Watkins Regional Park, Joint Base Andrews (nearby).
Why Upper Marlboro homeowners choose Pentagon Air
- Right next door in Bowie. Local techs, local trucks.
- Maryland licensed and insured HVAC contractor
- Factory-trained on 8 major brands
- Written estimate before any repair or install begins
- 24-business-hour response guarantee
What HVAC repair costs in Upper Marlboro
Most Upper Marlboro AC repairs in 2026 fall between about $150 and $1,500 depending on the part. You always get a written number before any work begins.
Want a deeper breakdown? Read our 2026 AC Repair Costs & Common Fixes guide.
What to expect when you call us
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1. Call or book online
Tell us the symptoms. We confirm a visit window.
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2. On-site diagnosis
A factory-trained tech inspects the system and explains what they find.
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3. Written estimate
Price in writing before any work begins.
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4. Repair on the spot
Common parts ride on the truck. The system is repaired and tested.
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5. Follow-up
We check in after the visit and stand behind the workmanship.
"Pentagon Air handled both of our HVAC systems on the same visit, found a refrigerant leak the last company missed, and gave us an honest price."
Upper Marlboro HVAC FAQs
How fast can you get to my Upper Marlboro home?
Upper Marlboro is only about 15 minutes from our Bowie shop. Most calls get a prompt weekday visit and we guarantee response within 24 business hours.
Do you work on propane furnaces in Croom and Rosaryville?
Yes. We service gas, electric, and propane furnaces, which matters in the more rural pockets of Upper Marlboro.
Do you pull Prince George's County permits?
Yes. We pull Prince George's County permits when the job calls for one and we handle the inspection process.
Do you handle multi-system estate homes?
Yes. Many Upper Marlboro estate homes run two or three systems. We service all of them on the same visit.
Are you licensed and insured in Maryland?
Yes. Pentagon Air is a fully licensed and insured HVAC contractor in Maryland.
Do you offer financing for HVAC replacement?
Yes. For full system replacements or larger repairs we can walk you through financing options.