Hot Water vs Cold Water Pressure Washer: Which Do You Need?
Quick answer: For most homeowners, cold water is enough. Hot water machines cost roughly $1,000 to $4,000 or more, reach about 250°F and shine on oil and grease. If you need one for a single job, Family Handyman suggests renting. We have not tested them ourselves.
Last updated: October 2026. Hot water pressure washers look impressive, but most households do not need one. This comparison uses Angi, Lowe’s and Family Handyman for prices, temperatures and use cases. We have not tested any of these machines ourselves.
What is the difference in one table?
| Feature | Cold water | Hot water |
|---|---|---|
| Price (Angi) | $100 to $1,000 | $1,000 and up |
| Price (Lowe’s) | $150 to $2,000+ | Typically $3,000+ |
| Pressure | 1,100 to 5,000 PSI (Lowe’s) | Up to 4,000 PSI |
| Temperature | Ambient | Up to 250°F |
| Maintenance | Exceptionally low (Lowe’s) | Oil and filter changes, draining |
| Weight | Light to moderate | 300 to 430 lb (Family Handyman) |
| Best for | Decks, cars, patios | Oil, grease, commercial use |
What are the pros and cons of hot water?
Angi lists the pros as better oil and grease removal and less detergent needed. The cons are cost, maintenance and the possibility of damaging wood and glass. Family Handyman says budget hot-water units run $3,000 to $4,000, about ten times the cost of cold, with an entry model at 2,700 PSI, 3 GPM and $2,625.
What about cold water?
Lowe’s calls cold-water machines exceptionally low maintenance and best for most homeowners. They handle siding, cars, decks and driveways well when paired with the right detergent.
When is renting the smarter option?
Family Handyman says rental of a hot-water washer costs $150 to $400 per day, and recommends renting for one-off projects. That is far cheaper than buying if you have one greasy job.
Choose cold water if…
You clean typical household surfaces and want a machine that is cheap and simple. See our electric guide and gas guide.
Choose hot water if…
You regularly remove oil or grease, work in commercial settings or need sanitised surfaces. See our hot water guide.
How do you handle grease with a cold washer?
Use a degreaser, let it dwell for the time on the label and rinse with a suitable nozzle. This is usually enough for occasional garage floor stains. Our detergent guide lists options.
What safety points apply to hot water?
- Never feed hot tap water into a cold-water machine.
- Never shut off a heated unit while the water is hot.
- Avoid hot water on wood and glass.
- Wear gloves and eye protection.
A simple decision checklist
- Estimate how often you will clean grease or oil.
- Compare buy versus rent costs.
- Check the space and weight for storage.
- Plan for descaling and burner maintenance.
- Read the manual before first use.
What does hot water cost to run?
Heated machines burn diesel, propane or electricity to raise the water temperature, so running costs are higher than for a cold-water washer, which only powers the pump. Lowe’s says hot units need oil and filter changes and must be drained, adding to upkeep. If you rarely clean grease, those recurring costs may never pay back. Weight is also a factor: Family Handyman says hot models weigh 300 to 430 lb, so you will need a solid wheel base and storage space.
Which jobs really need hot water?
| Job | Cold water enough? | Note |
|---|---|---|
| Deck, fence, siding | Yes | Use the right detergent |
| Car washing | Yes | Wide nozzle |
| Oil-stained garage floor | Usually with degreaser | Hot water helps |
| Restaurant kitchen exhaust | Often no | Hot water sanitises |
| Farm or shop equipment | Depends on grease | Consider renting |
Angi says heat reduces the detergent you need and cuts through oil and grease, but it can damage wood and glass, so test small areas first.
Can you get hot-water results on a budget?
A degreaser and a longer dwell time on a cold-water machine handle most household oil marks. If your task is a one-off, rental is the cheapest route. Family Handyman puts rental at $150 to $400 per day, which is still much cheaper than a $3,000 machine for a single job.
Frequently asked questions
Do I need a hot water pressure washer at home?
Usually not. Cold water handles most residential cleaning.
How hot do they get?
Angi and Lowe’s cite up to 250°F.
How much do they cost?
Angi says $1,000 and up, Lowe’s says typically $3,000+, and Family Handyman says $3,000 to $4,000 for budget models.
Can hot water damage surfaces?
Angi says it can damage wood and glass.
Final verdict
Buy cold water unless you clean grease regularly. For a one-off greasy job, rent a hot-water unit instead.
Sources: Angi, hot vs cold water pressure washers; Lowe’s pressure washer buying guide; Family Handyman, hot water pressure washers. Related: Best hot water pressure washers, Pressure washer vs power washer, Rent vs buy.
