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The Pre-Sale HVAC Checklist Realtors Wish Every Seller Knew

  • jeffkmgmechanical
  • Aug 31
  • 2 min read

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If you’re preparing to sell your home in New Hampshire or Southern Maine, your HVAC system can make or break the deal. Buyers want peace of mind that the heating and cooling system is safe, efficient, and ready for years of reliable service. Realtors know this and often wish sellers had their HVAC systems in better shape before listing.

At KMG Mechanical, we’ve created this Pre-Sale HVAC Checklist so homeowners can avoid surprises during inspections and show buyers their system is in top condition.

1. Document Maintenance History

  • Gather service records from past tune-ups, repairs, and installations.

  • If you haven’t had annual service, schedule one now. A recent maintenance report is a powerful selling point.

2. Replace or Clean Filters

  • A simple but overlooked step dirty filters suggest poor system care.

  • Fresh filters improve air quality and show buyers you’ve maintained the system.

3. Check the Thermostat

  • Make sure it’s working properly and calibrated.

  • If you still have an old manual thermostat, consider upgrading to a programmable or smart thermostat buyers love the energy savings and convenience.

4. Inspect Vents, Ducts, and Radiators

  • Ensure vents are unblocked and clean.

  • For homes with boilers, bleed radiators if needed and clean baseboards.

  • Professional duct cleaning can be a worthwhile pre-listing investment if ducts are dirty.

5. Verify Safety Devices

  • Test carbon monoxide and smoke detectors.

  • Buyers often ask about these devices during inspections showing they’re updated provides peace of mind.

6. Service the Furnace, Boiler, or AC Unit

  • A licensed HVAC technician should inspect, clean, and test your system before listing.

  • A professional tune-up can catch small issues and provide documentation for buyers and their agents.

7. Address Obvious Repairs

  • Leaking condensate lines, rusted flue pipes, or loud noises should be fixed before showing the home.

  • Buyers will notice these red flags and may demand credits or repairs during negotiations.

8. Highlight Efficiency Upgrades

  • If you’ve installed a high efficiency furnace, boiler, or mini split, make sure buyers know.

  • Provide rebate paperwork or manufacturer details efficiency features can raise home value.

9. Provide System Information

  • Have model and serial numbers on hand for the heating and cooling equipment.

  • Realtors and inspectors often ask for this info during the sales process.

Why This Matters to Sellers

Homes with well maintained HVAC systems:

  • Sell faster

  • Attract stronger offers

  • Avoid costly last minute negotiations after inspection

By preparing your HVAC system before listing, you’ll stand out in the market and give buyers confidence in their purchase.

KMG Mechanical: Helping Sellers & Realtors Succeed

At KMG Mechanical, we work with homeowners, realtors, and property managers to provide pre-sale HVAC inspections and tune-ups. Our technicians ensure your heating and cooling system is safe, efficient, and ready to impress buyers.

Call us today at (603) 919-7929 or visit www.kmgmechanical.org to schedule your pre-sale HVAC inspection.


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