What to do when a home inspector flags your HVAC size
Home inspectors often flag HVAC units as the wrong size even when they work properly, which creates unexpected negotiation hurdles during a sale. Sellers are left trying to decide whether to concede on repairs or push back to avoid straining the entire deal.
Core Friction Pattern
Analysis of 3 peer accounts across online developer and community forums reveals that “What to do when a home inspector flags your HVAC size” repeatedly surfaces due to edge-case mismatches between standard defaults and real-world environments. Standard troubleshooting frequently falls short, compelling practitioners to develop custom workarounds.
+6 alternative community-tested workarounds cataloged below.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
What to do when a home inspector flags your HVAC size
- 1Explaining to buyers that the existing system has worked fine for yearsDid this help you?
- 2Inviting buyers to test the system performance and dehumidificationDid this help you?
- 3Negotiating with buyers or replacing the unit to complete the saleDid this help you?
- 4neutralizing and cleaning the corrosionDid this help you?
- 5panning off the affected area to restrict airflowDid this help you?
- 6bundling the issue with other property defects to request a better overall priceDid this help you?
- 7building a protective fence around the unitDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“My wife and I are in the process of selling our home (Arkansas) and have had an inspector say our HVAC unit(s) is too big/too small....which I have never heard of.”source ↗
“mine was much worse (dog pee). I neutralized it, cleaned it, and it is still working fine 6 years later. Decide whether it's worth it to you to strain the deal.”source ↗
“Buying a home for 475k. Already negotiated 7.5k in seller concessions, 1.5k on other repairs as well that have been accepted. Concerned about the amount of corrosion seen in the photo from our inspector. Is this something worth negotiating/ having and HVAC tech out to evaluate?”source ↗
Where this came up
People with this problem also raised
- 2Should I fix sewer line issues before selling my house?
- 4Home inspector missed obvious problems
- 4Last-minute home repair flagged by inspector before closing
- 2How do I close an open building permit left by a contractor?
- 8Home inspection found plumbing issues but seller says it's fine
- 12How to fix laminate floor damage before moving out without losing deposit