| Quick facts | Answer |
|---|---|
| Cost range | Standard 40-gallon gas replacement about $1,300–$2,450; electric about $1,200–$2,200 |
| Time | Straightforward water-heater swap takes roughly 2 to 4 hours |
| Who's qualified | Ask for proof of insurance, relevant certifications (e.g., ASE for auto repair), and any license your state or city requires. |
What should I do today if my tenant has no hot water?
Call a local plumber today rather than waiting, because a standard water-heater repair or replacement is typically measured in hours, not days. Ask the tenant whether the unit is gas or electric and whether there is any leak or water pooling around the tank. Share those details when you call so the pro can arrive prepared.
Does a water heater replacement need a permit?
Missouri requires an installation permit before starting work on a replacement water heater. For an emergency replacement, the permit requirement is waived if the chief inspector is notified, and the application must be submitted within 7 calendar days after work begins. Kansas City water-heater installations commonly need a plumbing permit and city inspection, with one cost guide citing a $62 permit fee.
What should I check when hiring a plumber for a rental?
Ask the pro for proof of licence and insurance before work starts. Get the quote in writing and confirm whether the permit is included, since the permit is separate from equipment and labor. Compare bids on the same scope, because tankless systems usually cost substantially more due to added venting and utility work.
How much does a tankless water heater cost in Kansas City?
Tankless gas water-heater replacement in Kansas City is listed at about $3,000 to $6,000, with an average of about $4,300. A tankless installation can take about 4 to 8 hours, depending on venting, gas, and electrical changes. Standard tank replacements are usually a faster, lower-cost option for an emergency.
What to do next
- Confirm whether the water heater is gas or electric and check for leaks or standing water around the tank.
- Ask the local pro for proof of licence and insurance before any work starts.
- Request a written quote that shows the equipment, labor, and the separate permit fee.
- If replacing the unit on an emergency basis, make sure the chief inspector is notified so the permit timeline is met.
- Call (816) 750-5918 or email [email protected] for a free quote from a licensed, insured Kansas City plumber.
KC Plumb is a free referral service: an independent contractor does the work and may pay us a referral fee. You never pay us anything.




