Homeowner Pays $45,850 for HVAC Upgrade

A San Diego homeowner says a costly heating and cooling replacement left the upstairs above 80 degrees.

Updated on Nov. 5, 2026 in Home Renovation

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Would you trust a contractor to handle a $45,000 HVAC upgrade without getting competing bids?

A San Diego homeowner paid $45,850 for an HVAC upgrade that left the upstairs of their older, 4,000-square-foot home above 80 degrees. The homeowner says the replacement system performed no better than the one it replaced.

Why it matters

The case highlights how large residential HVAC investments can fail to deliver expected comfort, leaving homeowners with costly systems and few easy remedies. It also shows why homeowners weigh competing bids and independent inspections before committing to major installations.

The $45,850 bid included $3,850 in electrical work and $42,000 for an additional 4-ton heat pump and changes to existing ductwork in a 4,000-square-foot house. The source does not report a verified cause for the upstairs temperatures rising above 80 degrees.

The details

The homeowner said the upstairs stayed above 80 degrees after the upgrade and that email warnings had indicated the system was struggling to cool the house. The homeowner skipped competing bids because the contractor was already working on the home, then scheduled an independent HVAC inspector and switched the system off.

The HVAC upgrade was installed on an unspecified date, after which the upstairs exceeded 80 degrees.
The article about the failed upgrade was published on November 5, 2026.

Roadmap

The homeowner sought guidance on Reddit's r/hvacadvice forum after the upgrade failed to cool the upstairs. The case reflects a pattern of homeowners turning to online HVAC communities to evaluate contractor work when a major system does not perform as expected.

Homeowners in San Diego weighing a major HVAC replacement may find it useful to compare multiple bids and bring in an independent inspector before work begins. The case shows that a large installation can fail to deliver expected cooling, so verifying performance and contractor claims matters for household budgets.

The takeaway

Before committing to a large HVAC project, homeowners can obtain several bids and ask for an independent inspection to verify the proposed system will meet their cooling needs. Getting these checks in place early can help avoid costly underperformance.