How Often to Change Every Filter in Your House
A walk through every filter in a typical house, what actually governs each interval, why annually is usually the wrong answer, and the size trick worth doing once.
Guide
Home systems · HS-03
HVAC and Heat Pump Service Log
A free printable HVAC service log for air conditioning, heat pumps and ducted heating — professional servicing plus filter changes and owner checks.
Download Free · no sign-up
2 pages. Choose your paper size — both versions are laid out identically, so neither one gets shrunk to fit.
Print it and write on it
Fill it in type and save
The fillable versions have real form fields — open them in any PDF reader, type into them and save. Printing help.
What this sheet is for
Separate the annual professional service from the filter changes you do yourself, and keep both on one sheet.
Who it is for
Homeowners with air conditioning, a heat pump or ducted heating.
How to use it
- Record the filter size in the identification block so you can reorder easily.
- Log professional servicing in the upper table with the engineer's readings.
- Log your own filter changes and condenser cleaning in the lower table.
- Check the condensate drain every time — a blocked one is a common cause of call-outs.
What is on the sheet
The layout is fixed at a size that fits both A4 and US Letter, so the A4 and Letter files are visually identical and print at full size on either. Rows are set at a height that an adult can actually write a date and a few words into with a pen — most printable tables are built in a word processor and never tested with one.
Questions
How often should the filter be changed?
It depends on the filter type, the system and the household — pets, dust and running hours all shorten it. Your manufacturer gives an interval; record it in the identification block and then track what actually happens.
Read next
Related sheets
Filter Change Log
Stop measuring a clogged filter in a dark loft. Write the size down the first time, then reorder without taking the old one out.
PR-07 2 pages
Boiler Service Record
Keep the proof of annual servicing that boiler warranties commonly ask for, and an index of which engineer did what.
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One new sheet, most weeks
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