HVAC System Replacement Cost in Arlington, Virginia
Full HVAC system replacement in Arlington runs about $20,100 for a typical job. Basic installs start near $12,200. High-efficiency equipment with duct or electrical work can reach $26,500.
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Arlington Weather and HVAC Load
NOAA's 1991-2020 climate normals put Arlington at 3,769 heating degree days and 1,737 cooling degree days per year. Neither season dominates in Arlington. That balance is a big reason heat pumps and dual-fuel systems sell well in Virginia. On average, Arlington gets 60 freezing nights and 40 days above 90°F per year. Snowfall averages about 14 inches. For a 2,000 sq ft house, this climate points to a heating load somewhere near 50,000 BTU/h. Treat that as a starting number. A Manual J calculation will move it up or down based on insulation and windows.
| Heating degree days / year | 3,769 |
|---|---|
| Cooling degree days / year | 1,737 |
| Nights at or below 32°F | 60 |
| Days above 90°F | 40 |
| Average low / high | 50.8°F / 67.8°F |
Arlington Housing Stock
Census figures put the median build year in Arlington at 1976, so a typical house here has about 50 years on it. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. Owners live in 41.8% of occupied homes, roughly 47,000 households. Homes here have a median value of $864,800 and households a median income of $140,160. Those two numbers drive the labor adjustment in our estimate.
Arlington County had 1 hail day and 28 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 1.25 inches across. Storms here are more likely to cause power surges than coil damage, so a surge protector on the outdoor unit is worth the small cost.
When Replacement Makes Sense
- Both the heating and cooling equipment are 15 years old or more
- Some rooms are uncomfortable, and the energy bills are high
- Both units keep needing repairs
What Moves the Price
- Thermostat and zoning upgrades
- Efficiency ratings: SEER2, AFUE and HSPF2
- Permits and electrical work
- Furnace plus AC, or heat pump plus air handler
- Duct repair or replacement
- Equipment sized to the house and climate
We raised the national figures about 43% for Arlington using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.
What the Quote Should Cover
- New, matched heating and cooling equipment
- Duct connections and sealing
- Removing the old equipment
- A load calculation and system design
- Startup, testing and warranty registration
Virginia Permits, Efficiency Rules and Rebates
Virginia is in the DOE's Southeast region, where new split central air conditioners need at least 14.3 SEER2 (13.8 SEER2 for systems of 45,000 BTU/h and up). Plan on a mechanical permit for most replacements in Arlington; the contractor normally pulls it. Before you sign, ask each bidder for their Virginia license or registration number and proof of insurance. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.
Before You Hire
- Ask for a duct leakage test. Leaky ducts can lose 20 to 30% of what the system puts out.
- Get one quote for a heat pump system and one for a furnace plus AC.
- Make every bidder quote the same efficiency ratings, or the prices won't compare.
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HVAC System Replacement Questions from Arlington Homeowners
How much is full HVAC system replacement in Arlington?
Plan on $12,200 to $26,500, with most jobs near $20,100. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule full HVAC system replacement in Arlington?
In spring or fall. Those are the slow months between heating and cooling season in Arlington.
How often should an HVAC system be replaced?
Most systems get replaced every 15 to 20 years. AC units and heat pumps usually wear out before gas furnaces do.
Can I replace only the AC and keep my furnace?
Yes, as long as the indoor coil and blower work with the new AC. A mismatched system loses efficiency and can void the warranty.
HVAC System Replacement Near Arlington
- Chesapeake $9,900 to $21,500
- Richmond $8,600 to $18,700
- Virginia Beach $9,400 to $20,500
- Norfolk $8,300 to $18,100
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Washington Reagan Airport; NOAA Storm Events Database 2020-2025, Arlington County. Prices are our estimates, not contractor quotes. Updated 2026.