HVAC Maintenance Schedule: What Every Homeowner Needs to Know
HVAC maintenance schedule for any US climate: filters and MERV, spring and fall tune-ups, heat pumps, the R-410A refrigerant change, SEER2 and costs.
In this article
Quick answer: Check your air filter every month and replace it every 1 to 3 months, have a professional service your cooling system in spring and your heating system in fall, and have a heat pump serviced at least once a year. New systems manufactured since 2025 use different refrigerants (R-454B or R-32), but your existing R-410A system can keep running and be serviced. Climate changes the details, not the basic schedule.
The schedule at a glance
| When | Task | Who |
|---|---|---|
| Every month | Inspect the filter; replace when dirty or on schedule | You |
| Every 1-3 months | Replace the filter (60-90 days is the typical manufacturer guidance) | You |
| Cooling season | Keep 2 feet clear around the outdoor unit; clear the condensate drain | You |
| Spring | Cooling system tune-up | Professional |
| Fall | Heating system inspection (combustion, heat exchanger, flue for gas or oil) | Professional |
| At least yearly | Heat pump service (U.S. Department of Energy) | Professional |
| Monthly | Test CO and smoke alarms | You |
For the rest of the house, see the seasonal home maintenance checklist.
Filters: how often and which MERV
The filter protects the equipment first and your air second. ENERGY STAR advises inspecting, cleaning or changing filters once a month. The EPA notes that manufacturers typically suggest changing them every 60 to 90 days, and sooner if they look heavily soiled. Pets, dust, construction and constant fan use all shorten the interval.
MERV (Minimum Efficiency Reporting Value) runs from 1 to 16 for home filters. The EPA rates MERV 5 to 7 as low to moderate efficiency, 8 to 10 as moderate and 11 to 13 as high. If you want better filtration, the EPA recommends at least MERV 13, or as high as your system's fan and filter slot can handle. Most furnaces can handle MERV 13 if the filter is replaced often, but ask a technician first. A filter that restricts airflow can hurt performance.
One caution from the EPA: a furnace filter cleans air only while the system is running, which is typically less than 25 percent of the time.
Cooling and heat pumps
A spring visit should follow what ENERGY STAR lists for a tune-up: tighten electrical connections, lubricate moving parts, check the condensate drain, clean evaporator and condenser coils, check refrigerant, clean blower components and verify thermostat settings. The U.S. Department of Energy also says to check the evaporator coil yearly and clean it as needed.
Cost: HomeAdvisor's 2026 data puts a regular HVAC maintenance visit at about $250, within a range of $175 to $350, and annual service plans at $150 to $300. It also reports that peak-season prices can double, which is a good reason to book early.
Heat pumps need more attention, not less
A heat pump both heats and cools, so it may run in every season. The Department of Energy says to clean or change filters about every 3 months, clean the outdoor coil when it looks dirty, and have a technician service it at least once a year. It reports that the energy gap between a well-maintained heat pump and a severely neglected one can be 10 to 25 percent. NYSERDA, New York's energy agency, tells owners in cold climates to keep the outdoor unit clear of snow, ice and runoff and to call the installer about ice buildup, mold or water dripping from the unit. Follow your manufacturer's interval if it differs.
Heating: furnaces, boilers and CO safety
For gas, oil or propane equipment, the fall visit is also a safety inspection. ENERGY STAR lists gas and oil connections, burner combustion and the heat exchanger. A cracked heat exchanger or blocked flue can release carbon monoxide.
The U.S. Consumer Product Safety Commission (CPSC) recommends an annual professional inspection of heating systems, chimneys and flues, and CO alarms on every level and outside sleeping areas. Replace alarms at the age the manufacturer specifies.
Electric furnaces and heat pumps have no combustion, but they still need clean filters, clear airflow and a professional check of electrical connections.
Refrigerant and efficiency ratings: what changed
The R-410A transition
Under the federal AIM Act, new residential and light commercial air conditioners and heat pumps must use refrigerants with a global warming potential of 700 or less. EPA's sector table sets January 1, 2025 as the manufacture and import date. R-410A does not meet that limit, so manufacturers moved to R-454B (Carrier, Trane, Johnson Controls) and R-32 (Daikin, Goodman). Both are classed A2L, meaning mildly flammable, and technicians need A2L training.
What it means for you:
- Your existing R-410A system is not affected. Industry groups expect reclaimed and recycled refrigerant to be available for years, though prices may rise.
- The refrigerants are not interchangeable. You cannot put R-454B or R-32 into an R-410A system.
- You may still be quoted an R-410A system. In a final rule published May 26, 2026 (effective July 27, 2026), EPA removed the January 1, 2026 installation deadline for systems whose components were made or imported before January 1, 2025. Ask any contractor which refrigerant the system uses and when it was manufactured.
- Some states add their own rules. ACCA, an HVAC contractors' association, reports that New York's regulation keeps the original January 1, 2026 date. Ask your contractor or state environmental agency.
SEER2, HSPF2 and regional minimums
Since January 1, 2023, efficiency is rated as SEER2 (cooling) and HSPF2 (heating) under a stricter test. Federal minimums depend on the region:
| Equipment | Minimum |
|---|---|
| Split air conditioner, North region | 13.4 SEER2 |
| Split air conditioner under 45,000 Btu/h, Southeast and Southwest | 14.3 SEER2 (Southwest also has EER2 minimums) |
| Split heat pump, nationwide | 14.3 SEER2 and 7.5 HSPF2 |
The Southwest region is Arizona, California, Nevada and New Mexico. The Southeast is Alabama, Arkansas, Delaware, Florida, Georgia, Hawaii, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia and Washington, D.C. All other states are the North.
Tax credit: The federal Energy Efficient Home Improvement Credit (25C) covered heat pumps, but the IRS says it applies only to property placed in service before December 31, 2025. Check your state energy office and utility for current rebates, and ask a tax professional about your situation.
How this varies by region
IECC climate zones, used in U.S. building codes, run from 1 (very hot) to 8 (subarctic), with A (humid), B (dry) and C (marine) suffixes.
| Region | Example cities (zone) | What to emphasize |
|---|---|---|
| Hot-humid | Miami (1A), Tampa (2A), Atlanta (3A) | Cooling runs most of the year, so check filters every 1-2 months and keep the condensate drain clear; humid heat is hard on equipment |
| Hot-dry | Tucson (2B), El Paso (3B) | Dust loads filters and coils; Southwest efficiency rules add EER2 minimums |
| Mixed and marine | New York (4A), Albuquerque (4B), Seattle (4C) | Both seasons matter; book both tune-ups |
| Cold and very cold | Buffalo (5A), Denver (5B), Rochester, MN (6A) | Heating-dominant: heat exchanger and CO checks; cold-climate heat pumps or dual-fuel systems; keep outdoor units clear of snow |
| Coastal (any zone) | Ocean and Gulf shorelines | Salt accelerates corrosion, so ask the technician to check coils and cabinets |
The Department of Energy says cold-climate heat pumps are designed to work at temperatures as low as 5 degrees Fahrenheit, and suggests looking for an ENERGY STAR Cold Climate label in very cold areas. Manufacturers also note that extreme heat and humidity can shorten a system's life.
When to repair and when to replace
Lifespans vary by manufacturer and climate. Bryant lists central AC at 12 to 15 years, Lennox at 15 to 20, and Bryant lists heat pumps at 10 to 15 and furnaces at 15 to 25. Bryant advises considering replacement for AC or heat pumps over 10 years old and furnaces over 15, especially with frequent repairs or rising bills.
Surveys of full-system replacement vary widely: HomeAdvisor reports a typical $5,000 to $12,500, and ConsumerAffairs reports most homeowners paying $8,000 to $15,000, with air-source heat pumps at $8,000 to $16,000. Ductwork, home size and region drive the difference. Get at least two local quotes, ask for the SEER2 and refrigerant in writing, and confirm permit requirements with your local building department, since they vary.
Keep the records in one place
Add each system as an asset in Steadwell with its install date. The home maintenance tracker can repeat filter and tune-up tasks and email you 3 days before they are due. On the Plus plan, AI scan can read a nameplate photo for the model and serial number. See also how long other equipment lasts in our appliance lifespan guide.
Frequently asked questions
How often should I change my HVAC filter?
Inspect it monthly and replace it every 1 to 3 months. Manufacturers typically suggest 60 to 90 days, and sooner with pets, dust or constant fan use.
Do I need to replace my AC because of the R-410A phase-out?
No. The rules govern new equipment, and existing R-410A systems can be repaired and used. Service costs may rise over time as supply shifts.
Is a higher MERV filter always better?
No. The EPA suggests MERV 13 or as high as your system can handle, but a very restrictive filter can reduce airflow. Ask a technician which rating your system supports.
How often should a heat pump be serviced?
The U.S. Department of Energy says at least once a year. Some manufacturers specify every 1 to 2 years, so follow your equipment's documentation.
When should I schedule HVAC maintenance?
Cooling in spring and heating in fall, before peak demand. In cold regions, book the heating inspection by early fall; in hot regions, book cooling in late winter or early spring.