Denver Water Heater Replacement — Save $200 on Installation
Greg answers the phone 24/7 and confirms your fixed price before work starts — same price nights and weekends, no after-hours fee. Same-day installation is often available—call to confirm today's openings. Serving Denver, Aurora, Thornton, Castle Rock and Highlands Ranch.
- 40+ heaters in stock
- Fixed price before work starts
- 2-year labor / 6-year tank warranty
Request a Water Heater Callback
Four quick fields. Greg or the office calls you back.
Got it — we'll call you shortly.
If your tank is actively leaking, shut off the cold-water valve on top of the heater and call us now.
Call Greg: (983) 444-8460
Fixed price. In stock. Same-day often available.
Most water heater companies quote after they arrive and order the unit afterwards. Greg confirms the price before work starts and pulls the unit off our own shelf. Same-day installation is often available—call to confirm today's openings.
Tank and tankless, gas and electric, 40 and 50 gallon — sat in our shop, not on a supplier's truck.
Save $200 on a new water heater installation. Greg confirms the number before a wrench comes out.
2-year labor warranty on our work, 6-year manufacturer warranty on the tank. Code-compliant, permitted where required.
Gas tank or tankless — which one is right for you?
Both are on our shelf. Tell Greg how many people are in the house and how much space you have, and he'll tell you which one makes sense — no upsell.
Gas tank water heater
40 or 50 gallon. Straight swap for what you have now — same footprint, same venting.
Tankless water heater
Wall-mounted, frees up floor space and never runs out mid-shower. Uses less gas because it only heats when a tap is on.
Signs your water heater is about to go
- No hot water, or it runs out fast
- Water pooling around the base of the tank
- Rust-colored or smelly hot water
- Popping, rumbling or banging noises
- Pilot light keeps going out
- Unit is 10–15+ years old
Repair or replace? Greg will tell you straight.
If your heater has life left in it, we'll say so. If it doesn't, you get a fixed price before work starts and $200 off the new installation. Owner Greg Kennedy — Colorado master plumber, license MP188016 — picks up the phone himself, 24 hours a day, 7 days a week. No call center, no after-hours fee.
What Denver homeowners say
Verified 5-star reviews from Kennedy Plumbing & Heating's Google Business Profile.
"Kennedy Plumbing and Heating provided excellent service with great attention to detail and were extremely clean. They fixed our main line and installed a tankless water heater for us on an emergency basis. Greg and his team are fantastic. Highly recommend."
"…I also had them install two 40-gallon water heaters in my home, and once again, the quality of their work was outstanding. I am truly pleased with my experiences and am confident in recommending their services to others."
"I needed five water pressure protection valves installed with expansion tanks on the hot water heaters. Kennedy plumbing is extremely fast. They pulled the permits. Got everything done within a week. Very reasonably priced, communication was awesome."
"I have called Greg many times over the last year. He is prompt and professional, his guys get things done right. Prices are fair and he stands behind his work. I would highly recommend calling Greg Kennedy for any plumbing and heating needs."
Water heater replacement FAQs
How much does a new water heater cost installed?
Greg confirms your fixed price on the phone before any work starts — including haul-away of the old unit — and a new water heater installation receives $200 off. Tankless and larger units are quoted individually, and the price you're given is the price you pay.
Can you install it today?
Same-day installation is often available—call to confirm today's openings. We stock 40+ units, so most jobs don't wait on a supplier.
Do you install tankless?
Yes. We size the gas line and venting properly, and we'll tell you honestly whether tankless makes sense for your house or whether a tank is the better buy.
Do you answer nights and weekends?
Yes. Call (983) 444-8460 any time, 24/7, and Greg picks up. The price is the same nights and weekends — there is no after-hours fee.
Is financing available?
Yes — financing is available with a deposit. Ask when you call.
What areas do you cover?
Denver, Aurora, Thornton, Castle Rock, Highlands Ranch, Parker, Centennial, Bennett and the surrounding metro.
Is Kennedy licensed and insured?
Yes. Greg Kennedy is a Colorado master plumber, license MP188016, and Kennedy Plumbing & Heating is fully insured.
Ready to get your hot water back?
Call to confirm today's openings, or request a callback and we'll ring you.