Winterize Cost Calculator
| Cart item | Band | What it stops |
|---|---|---|
| Foam pipe sleeves, 20 ft | $10-25 | burst lines in exterior walls |
| Faucet covers x4 | $15-25 | split hose bibs |
| Weatherstripping, 4 doors | $25-40 | the drafts daylight shows |
| Window film, 10 windows | $50-70 | radiation and frame leaks |
| Caulk, 6 tubes | $20-30 | the two-material gaps |
| Water heater blanket | $25-35 | standby loss in a cold garage |
Winterizing has a reputation as a big-ticket service, and the pro version can be — but the version that actually prevents the expensive failures is a shopping cart: foam pipe sleeves at about a dollar a foot, faucet covers at five dollars each, a weatherstripping roll per exterior door, shrink-film kits for the draftiest windows, a few tubes of caulk, and an hour on a ladder. For a typical 2,000-square-foot house the whole cart lands between $120 and $190, which is roughly the insurance premium on a burst pipe that averages four figures to remediate.
This calculator scales that list to your square footage and sets it against the pro visit ($300-600 for a full winterization trip including a furnace tune-up), because the honest comparison is not DIY versus doing nothing — it is a Saturday with a caulk gun versus paying someone to do the same six tasks. Either way, the physics agrees with the order of operations: sealing air leaks and insulating the attic are the highest-return moves per ENERGY STAR, and everything on this list is the cheap second act.
How to use
- Enter your square footage for a scaled list, then buy by the roll and the tube — leftovers live in the garage and get used next fall, which is why rounding up costs nothing.
- Do the water first: pipe sleeves on anything in an exterior wall or crawlspace, covers on every outside spigot, and know where your main shutoff is before the first hard freeze, not after a line splits.
- Then do the air: weatherstrip the doors that daylight shows under, film the windows you never open in winter, and caulk the gaps where two materials meet — the attic-and-basement penetrations matter more than the ones at eye level.
Frequently asked questions
How much does it cost to winterize a house?
The DIY cart for a typical 2,000-square-foot home runs $120-190: pipe insulation, spigot covers, door sweeps and weatherstripping, window film, and caulk. A professional winterization visit — sealing, insulation spot-fixes and a furnace tune-up — commonly lands $300-600, with the tune-up alone at $80-200. Homes over 3,000 square feet scale up roughly with the numbers above.
What should I winterize first?
Water, then air. A burst pipe is the only winterizing failure with a four-figure average repair, so exterior-wall pipes, crawlspace runs and every spigot get insulation and covers first. Air sealing comes second — drafty doors and leaking window frames — and attic insulation is the big-budget item worth pricing separately, because it moves the heating bill every winter, not just this one.
Do faucet covers actually work?
For the standard hose bib in a moderate freeze, yes: an insulated cover keeps the trapped air around the spigot above freezing through the night, and they cost about $5. In sustained hard-freeze climates the stronger move is inside the house — shut the valve feeding that spigot and leave the outdoor end open to drain. The cover protects the fixture; draining the line protects the pipe behind the wall.
Is professional winterization worth it?
For most able-bodied households the shopping-cart version covers the high-value items, and the furnace tune-up is the one pro task with a real argument: a tech catches cracked heat exchangers, failing igniters and carbon-monoxide risks a homeowner cannot see. If you hire out one thing, hire the tune-up and spend the Saturday on the caulk gun yourself.
When should I winterize?
Before the first hard freeze, which in most northern states means early-to-mid October — the faucet covers and pipe sleeves specifically, because the first freeze is what splits lines. Weatherstripping and film can wait until November without consequence. Every year a few households learn the schedule from a burst spigot instead of a calendar.