How often to change your furnace filter

A clean filter keeps air moving and the furnace from straining. Here is how to pick the right one and when to swap it.
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Kestrel Ridge repairs, installs and maintains furnaces, heat pumps and air conditioners for homes across your area. You get a clear diagnosis, a written price before work starts, and a technician who leaves the place as tidy as they found it.
Example figures — set these in the site settings.
We service and install most major equipment lines.
One team handles the whole system, so the person who fixes your furnace in January already knows your air conditioner in July.

We trace the fault, explain it in plain words and fix most furnaces in one visit.

Right-sized heat pumps that heat in winter, cool in summer and cut the running cost of both.

We clear dust and debris from supply and return ducts so air moves freely again.

Smart and programmable thermostats wired, set up and explained before we leave.

A spring check of coils, refrigerant and drainage that keeps the summer quiet.

Filters, purifiers and humidity control for a home that breathes easier.

We trace the fault, explain it in plain words and fix most furnaces in one visit.

Right-sized heat pumps that heat in winter, cool in summer and cut the running cost of both.

Right-sized heat pumps that heat in winter, cool in summer and cut the running cost of both.

A spring check of coils, refrigerant and drainage that keeps the summer quiet.

We clear dust and debris from supply and return ducts so air moves freely again.

Smart and programmable thermostats wired, set up and explained before we leave.

Filters, purifiers and humidity control for a home that breathes easier.
Licensed crews
Kestrel Ridge started with one van and a simple rule: explain the problem, agree the price, then do the work. Our technicians still work that way today, on every furnace, heat pump and air conditioner we touch.
Licence details are set by the business.
You approve the price before any work starts.

We fix it right, or we come back.
No surprises in between: you know who is coming, what they found and what it costs before anything changes.
Pick a visit window online or by phone and tell us what the system is doing.
Your technician tests the system and shows you what they find, with photos if you like.
You approve a written price, then we repair or replace and test everything twice.
We check in after the visit and remind you when the next tune-up is due.
Visit windows and follow-up timing are set by the business.
You see the cost before we start, and it does not change halfway.
Shoe covers, drop cloths and a clean-up before we leave.
Workmanship cover on every job; terms are set by the business.
Priority visits for maintenance-plan members in heating season.
98 percent
of visits fixed the same day (example)
12
technicians on the team (example)
Example figures — set these in the site settings.

The questions homeowners ask us most, about repairs, new equipment, upkeep and paying for it.

Often it is a dirty filter, a tripped limit switch or an ignition fault. Check the filter and the thermostat setting first; if the air stays cold, book a visit and we will test the burners and safety controls.
Once a year, ideally in early autumn, so small faults are found before the first cold night.
Modern cold-climate heat pumps heat well far below freezing. We size each one to your home and can pair it with your existing furnace as backup.
A dusty smell at first start-up is normal. A burning or gas smell is not: turn the system off, leave the house if you smell gas, and call your gas supplier before calling us.
Common causes are a clogged filter, dirty coils or low refrigerant. We find the cause before we recommend a fix.
Usually about an hour for one system, including coil cleaning, refrigerant checks and a drain flush.
We give you both prices and the running costs, so you can compare. Age alone is not a reason to replace.
Yes. Ductless units mount on the wall and need only a small opening to the outdoor unit.
Every one to three months, more often with pets or during heavy use.
Two seasonal tune-ups, priority booking and a reminder before each one. Plan terms are set by the business.
Yes, supply and return ducts, with before and after photos.
Keep filters clean, use a programmable thermostat and book a yearly tune-up; we can also check insulation around ducts.
The diagnostic fee and whether it counts toward the repair are set by the business and shown before booking.
Always. You approve a written price first.
Financing options for new equipment are a configurable setting.
Card and bank transfer; accepted methods are set by the business.
Seasonal tune-ups
A tune-up takes about an hour and keeps the system quiet through the season ahead. Choose a window that suits you; we confirm it by message.

A clean filter keeps air moving and the furnace from straining. Here is how to pick the right one and when to swap it.
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A few degrees and a sensible schedule do more than you might think. These are the settings we use at home.
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Keep the base clear, leave the cover off a heat pump, and know which noises are normal on a frosty morning.
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