Maintenance
Coolant flush and refill: what it costs
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $25 | $75 |
| Labor: 0.7 to 1.5 hours × $110 to $150 an hour | $77 | $225 |
| Fees: shop supplies, disposal, diagnostics | $10 | $25 |
| Total, rounded | $110 | $330 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in the US, $27.13 an hour, times 4 to 5.5 to cover what a shop bills (overhead, tools, insurance, profit). Parts are a band from budget aftermarket to the manufacturer part. Full method.
Not a repair shop, estimates only. Typical range, estimate. Not a quote. Your car, parts and shop change the number.
Old engine coolant is flushed out and new coolant is added. It keeps the engine from overheating or freezing and protects the radiator and water pump from corrosion.
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What is usually included
- Drain old coolant
- Flush the system with water or cleaner
- Refill with the correct coolant mix
- Bleed air from the system
- Check hoses, cap, and for leaks
What moves the price
- Coolant type your car requires
- Cooling system size
- Air bleeding difficulty on some engines
- Disposal fees for used coolant
Questions to ask before you say yes
- Which coolant type does my car need?
- Are you doing a full flush or drain and fill?
- Will you pressure test the system?
- Are the hoses and cap checked?
Can you do it yourself?
A doable DIY on a cool engine; the risks are scalding coolant, trapped air that causes overheating, and pet-toxic spills.
Shopping for the part? Search car parts on eBay (affiliate link, disclosure). Make sure the part fits your car before buying.
Common questions
How often should coolant be changed?
Many cars call for it at 5 years or 60,000 to 100,000 miles for the first change, then every 3 to 5 years. Your manual has the exact number.
Can I mix coolant colors?
Not safely. Different coolants use different additives and can gel or lose protection if mixed. Use the type your manual lists.
What are signs that coolant is overdue?
Rusty or cloudy fluid, a sweet smell, or temperature that creeps up can all be signs. A quick test strip at a shop shows if protection is low.
How much does coolant flush and refill cost?
A typical range across the US is $110 to $330. That is an estimate from parts prices, labor hours and the local labor rate, not a quote.
Typical range in 10 metro areas
Only the labor rate changes between cities. Same parts, same hours.
| Area | Typical range, estimate |
|---|---|
| Boston area, Massachusetts | $120 to $370 |
| New York City area | $110 to $350 |
| Los Angeles area, California | $110 to $360 |
| Chicago area, Illinois | $110 to $340 |
| Houston area, Texas | $100 to $320 |
| Dallas-Fort Worth area, Texas | $100 to $320 |
| Phoenix area, Arizona | $110 to $330 |
| Atlanta area, Georgia | $110 to $340 |
| Miami area, Florida | $100 to $330 |
| Seattle area, Washington | $120 to $360 |