Pittsburgh puts HVAC systems through some of the hardest work in the country. Humid 90-degree summers, single-digit winters, and everything in between. Skipping maintenance is how a $5,000 system becomes a $5,000 problem.
Here is what to do and when — both the stuff you handle yourself and the stuff a tech should do.
Spring Checklist (Before AC Season)
Do yourself:
- Replace the air filter
- Clear debris from around the outdoor unit (leaves, branches, grass) — maintain 2 feet of clearance on all sides
- Hose down the outdoor condenser coils gently
- Test the AC by switching to cooling mode and verifying cold air comes from the vents
- Check that all vents and registers are open throughout the house
- Clear the condensate drain line (pour a cup of vinegar down it to prevent clogs)
Have a tech do:
- Check refrigerant levels
- Clean evaporator coil
- Inspect and tighten electrical connections
- Test capacitor and contactor
- Calibrate thermostat
- Check ductwork for leaks
- Verify proper airflow
Fall Checklist (Before Heating Season)
Do yourself:
- Replace the air filter (again)
- Test the furnace by switching to heat mode — verify warm air comes from vents
- Check carbon monoxide detectors and replace batteries
- Clear anything stored near the furnace (maintain 3 feet clearance)
- Check for unusual smells when the furnace first fires up (a brief burning smell is normal, persistent smell is not)
Have a tech do:
- Inspect the heat exchanger for cracks (critical safety check)
- Clean and test the ignitor or pilot light
- Check gas connections for leaks
- Inspect the flue and venting
- Test safety controls and limit switches
- Lubricate moving parts
- Check blower motor and belt
Monthly (Year-Round)
- Check your air filter — replace if dirty
- Glance at your thermostat to confirm normal operation
- Listen for unusual noises from the system
- Check that all vents are unblocked
Maintenance Supplies to Keep on Hand
- HVAC air filters (multi-pack) — buy in bulk, change every 1-3 months
- Condensate drain pan tablets — prevent algae and clogs in the drain line
- Carbon monoxide detector — essential with any gas furnace
- AC coil cleaner spray — for cleaning accessible coils
- Foil HVAC tape — seal small duct leaks (not duct tape — actual HVAC tape)
How Much Does Maintenance Cost?
Individual tune-ups in Pittsburgh typically cost $80-$150 per visit. Most homeowners need two per year (spring AC + fall furnace), so $160-$300 annually.
Many HVAC companies offer maintenance plans that include both visits plus perks like priority scheduling and repair discounts. These typically run $150-$300 per year and often pay for themselves with the discount on a single repair.
What Happens If You Skip Maintenance
Pittsburgh homeowners who skip annual maintenance commonly see:
- 10-25% higher energy bills from reduced efficiency
- More frequent breakdowns, especially during extreme weather
- Shortened equipment lifespan (10-12 years instead of 15-20)
- Voided manufacturer warranties (many require proof of annual maintenance)
- Safety risks from uninspected gas furnaces (carbon monoxide)
Getting a Maintenance Plan
If yinz want to get on a regular maintenance schedule, get connected with a local HVAC pro through KeepYinzCool. Most Pittsburgh HVAC companies offer affordable annual plans — and spring is the best time to start before the summer rush hits.