HVAC repair guides for Onondaga County homes

Six short guides written for people who just want to know where they stand. Each is sourced and none is trying to sell you a new system.
All guides
No heat: what to check first
Four quick checks and one safety rule for a cold house.
Read the guideRepair or replace your heating system
Age, part cost and refrigerant decide whether a repair pays off.
Read the guideWho can work on your system in Onondaga County
New York has no state HVAC license, so ask these questions.
Read the guideCracked heat exchanger and carbon monoxide
Why a cracked heat exchanger matters, and what to do first.
Read the guideR-410A: what changed in 2025
Older R-410A systems can still be repaired and refilled.
Read the guideWho pays for a heating repair in Onondaga County
Whose bill a heating repair is depends on your situation.
Read the guide
Start with the first guide if your heat is out right now. Read the others when you have a calmer moment, ideally before a bad night in January.
How to use them
Each guide lists the repairs it relates to, so you can go from reading to asking in one step. The sources behind the facts are published documents from federal, state, county and local agencies.
Pick the repair, and take it from there
One form or call starts it. A local contractor takes over. $100 comes off your first booked job.