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

HVAC System Replacement Cost in Longmont, CO

Based on 3 community reports from Longmont, CO homeowners, the typical HVAC system replacement cost ranges from $18500.00 to $20000.00, with a median of $19420.00.

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 $19,420.00 · typical $18,960.00–$19,710.00

$19,420.00

$18,500.00

$20,000.00

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

Most jobs land between $18,592.00 and $19,942.00 (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 7, 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

$20,000.00

7 days ago

Size not reported

Full HVAC System Replacement

Did HVAC, tankless water heater, and lots of insulation back in 2016 for about $20k. Went through Efficiency Works and got rebates and help finding good contractors.

$18,500.00

7 days ago

Size not reported

AC And Furnace Replacement

Replaced AC and furnace with Lennox brand, added a whole home humidifier and a UV air sanitizer/deodorizer. The final cost was just around $18.5k after some adjustments.

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Real homeowner write-ups, locked.

$ • • •

7 days ago

Size not reported

"The house is 2400 sq ft and the cost includes a variable speed heat pump, evap coil, and 2-stage gas furnace."

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