10 HVAC Maintenance Tips Every Surrey Homeowner Should Know

A well-maintained HVAC system lasts longer, runs more efficiently, and costs less to operate. The average Surrey homeowner can extend their furnace or AC's lifespan by 5–8 years just through consistent preventive maintenance — saving thousands in premature replacement costs.

Here are 10 practical tips from our certified technicians, organised by what you can do yourself and what needs a professional.

What You Can Do Yourself

1. Change Your Air Filter Every 1–3 Months

This is the single highest-impact thing you can do for your HVAC system. A clogged filter forces your system to work harder, reduces airflow, increases energy consumption, and can cause overheating that trips the high-limit switch — or worse, cracks the heat exchanger.

In Surrey, with our damp climate and common presence of pets, we recommend checking filters monthly and replacing every 60–90 days. Use a MERV 8–11 filter for the best balance of airflow and filtration.

2. Keep Vents and Registers Clear

Furniture, rugs, curtains, and boxes blocking supply or return vents create pressure imbalances in your ductwork. This reduces efficiency, creates hot and cold spots, and can damage your blower motor over time. Walk through your home seasonally and confirm all vents are open and unobstructed.

3. Clear the Area Around Your Outdoor Unit

Your AC condenser or heat pump outdoor unit needs at least 24 inches of clearance on all sides for proper airflow. Remove leaves, vegetation, and debris regularly — especially after Surrey's stormy autumn weather. In winter, never let ice or snow accumulate on heat pump units (they have defrost cycles, but heavy snow load is a different issue).

4. Check Your Thermostat Settings Seasonally

A programmable or smart thermostat pays for itself quickly. Set heating to 18–20°C when home and 15–16°C when away or sleeping. Each degree lower saves approximately 3% on your heating bill. If you don't have a smart thermostat, ask us about upgrading during your next service — we can often include one at minimal cost.

5. Look for Unusual Sounds, Smells, or Behaviour

Your HVAC system will often warn you before it fails. Pay attention to:

• Banging/clanging: Loose component or blower wheel imbalance
• Squealing: Worn belt or bearing (older systems) or refrigerant issue
• Burning smell: Electrical issue or dust burning off after summer idle — if persistent, call us
• Short cycling: System turning on and off too frequently — many possible causes
• Weak airflow: Clogged filter, blocked duct, or blower issue

What Needs a Professional (Annual Maintenance Visit)

6. Annual Furnace Inspection (September/October)

Before the heating season starts, a certified technician should inspect your furnace. A professional annual inspection includes:

• Heat exchanger inspection for cracks (carbon monoxide risk if cracked)
• Burner cleaning and ignition system test
• Gas pressure check and valve inspection
• Blower motor amp draw test
• Flue and exhaust system inspection
• Safety control testing (limit switch, pressure switch)
• Filter replacement

Our annual furnace tune-up is $129 and includes all of the above. Most manufacturer warranties require annual professional service to remain valid.

7. Annual AC or Heat Pump Tune-Up (April/May)

Pre-season cooling maintenance prepares your system for Surrey's summer heat and catches issues before the busiest season. An AC tune-up includes:

• Refrigerant level check (and top-up if needed)
• Evaporator and condenser coil cleaning
• Electrical connection tightening and amp draw tests
• Condensate drain flush
• Capacitor and contactor inspection
• Filter replacement

8. Clean Your Condensate Drain Annually

High-efficiency furnaces and air conditioners produce condensate water as a byproduct. This drains through a condensate line — which can clog with algae, mold, or debris. A clogged condensate line causes water backup that can flood your furnace or trigger a shutdown. Have us flush and inspect the condensate system during your annual visit.

9. Get Your Ducts Professionally Cleaned Every 3–5 Years

Ductwork accumulates years of dust, allergens, pet dander, and debris. Beyond air quality concerns, dirty ducts restrict airflow and reduce system efficiency. Surrey HVAC Specialists recommends professional duct cleaning every 3–5 years, or after any renovation, water damage, or if you notice visible dust from vents.

10. Test Your Carbon Monoxide Detectors

This one isn't strictly an HVAC tip — but it's critical. Every home with gas appliances should have CO detectors on every floor, tested monthly and replaced every 5–7 years. A cracked heat exchanger is the most common HVAC-related CO risk, and it's invisible and odourless. Our annual furnace inspections always include a heat exchanger check.

HVAC Maintenance Schedule for Surrey Homeowners