3 reports. Useful first pass, but one outlier can still shift the range.

HVAC System Replacement Cost in Fairfax, VA

In Fairfax, VA, HVAC system replacement costs typically fall between $6,800 and $10,000, with a median price of $7,200 based on recent local projects. The middle 50% of homeowners paid between $7,000 and $8,600 for this service.

Early data · 3 reports so far. compare with the broader service overview before making a decision. More reports make this guide stronger.

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Price distribution

Median $7,200.00 · typical $7,000.00–$8,600.00

$7,200.00

$6,800.00

$10,000.00

Shaded band: middle 50% of reports (25th–75th percentile). Median tick in teal.

Most jobs land between $6,840.00 and $9,720.00 (5th–95th percentile). Ignoring 1 outlier below and 1 above.

Based on reports from Apr 2026 (first entries this month).

Data freshness: 3 reports in the last 90 days. Help keep this current →

Data last updated Apr 6, 2026.

Size context is still being collected (0 of 3 reports include home size or system size). Numbers above may not reflect what your specific home would pay. Add a report to sharpen this →

Latest reports

The underlying prices behind this page.

3 total reports

$10,000.00

8 days ago

townhome

Full HVAC System Replacement

Got an estimate for a complete HVAC replacement without duct work for a small three-level townhouse. The total cost was $10K.

$7,200.00

8 days ago

townhome

Full HVAC System Replacement

Purchased a new HVAC system for a 1300 sq foot townhome and paid in November 2021.

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Real homeowner write-ups, locked.

$ • • •

8 days ago

townhome

"Purchased a mid-level Lennox HVAC system for a 2100sq ft townhouse. The old HVAC was 15 years old while the AC was only 8 years old, so did not replace everything."

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