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Before-and-after: old leaking tank water heater replaced with a new Rinnai tankless unit by Polley's Perfect Seasons in Plainfield, IN

Tankless Water Heater Installation in Plainfield, IN - Endless Hot Water, Lower Bills

Old tank leaking again? Showers running cold halfway through? Tankless gives you endless hot water, frees up a closet, and cuts the gas bill. We install most jobs in one day. Call (317) 649-8749.

Wall-mounted Rinnai tankless water heater installed by Polley's Perfect Seasons in a Plainfield, IN basement
Wall-mounted Rinnai tankless - frees up the entire tank footprint.
50-gallon tank starting to puddle, pilot won't stay lit, last shower of the morning is always cold. You're in the right place. We've installed tankless systems across Plainfield since the technology became viable in the early 2000s, and we'll give you the honest math for your specific home.

Common problems

Reasons to go tankless

Tap any reason to see when tankless makes sense - and when a standard tank is the smarter spend.

Tank past 10 years old

Most fail between 8-12 years.

Puddle at the base of the tank

Tank failure - already leaking.

Hot water runs out fast

5-minute showers and you're cold.

Gas bills climbing every winter

Same usage, bigger bill.

Want the closet space back

Remodeling, finishing basement.

Going all-electric

Planning ahead for electrification.

Tap a problem for the fix

Our tankless installation process

Tank-to-tankless conversion with new code-compliant venting and gas line in a Plainfield, IN home
Tank-to-tankless conversion with upgraded venting and gas line.

Sizing matters more on tankless than tank because an undersized unit will struggle on cold-weather days when incoming water is 40°F. We size for the worst-case day, not the average. We're certified Rinnai, Navien, and Rheem installers, and we pull the permit and handle inspection on every install. Pairs naturally with our broader Water Heater Services Hub. If you'd rather stay with a traditional tank, see Water Heater Installation. Bundling with Furnace Installation or AC Installation can save real money on labor.

How it works

How a tankless install goes

From the assessment to the final flow test on every fixture.

  1. 1

    1. Free in-home assessment

    Within 24-48 hours. We measure peak flow demand, gas line size, venting path, and water hardness.

  2. 2

    2. Two or three options

    Rinnai, Navien, and Rheem - side by side with financing built in. Sized for Indiana's 40°F incoming winter water.

  3. 3

    3. One-day install

    Wall-mount, gas line upgrade if needed (most homes need 3/4"), stainless or PVC venting, isolation valves for future flushing, full flow test.

Ready for endless hot water?

Free in-home tankless quote. Honest sizing for Indiana's coldest day.

Tankless installation for Plainfield homes

Before and after: old leaking tank water heater replaced with a Rinnai tankless unit in a Plainfield, IN home
Before / after - same closet, twice the hot water, half the gas bill.

Plainfield, Avon, Brownsburg, and Mooresville sit on hard water - and hard water is the number-one killer of tankless systems if you don't plan for it. We carry water-test kits on every assessment so you'll know whether a softener pre-treatment makes sense. That one decision can double the life of the new unit. Indiana's cold winters also matter for sizing: incoming water can drop to 40°F in February, which means a unit rated for 8 GPM at 70°F rise might only deliver 5 GPM in winter.

Service area

Tankless installation across Hendricks County

Pick your town for what we typically recommend - and the local install gotchas.

Ready for endless hot water and a smaller gas bill? Call (317) 649-8749 for a free in-home tankless quote, or learn more about Plainfield's most trusted HVAC contractor.

FAQ

Tankless Water Heater Installation FAQs - Plainfield, IN

Quick answers to the questions homeowners across Hendricks County ask before they call (317) 649-8749.

Recent Work

Tankless Water Heater Installation from real Plainfield homes

Recent jobs from Polley's Perfect Seasons across Hendricks County.

Rinnai tankless water heater installed by Polley's Perfect Seasons in Plainfield, IN
Wall-Mounted Tankless
Before and after of a Rinnai tankless water heater install in Plainfield, IN
Before / After
Rinnai tankless upgrade with new venting and gas line in a Plainfield, IN home
Code-Compliant Venting

Reviews

What our Plainfield neighbors are saying

Google
5.0

Based on 169+ Plainfield reviews

J

James Gearries

a day ago

"Tony was a super nice guy - the type of HVAC tech you hope shows up to your house. He gave me options for a new water heater and multiple positives/negatives of each option."

E

Essa

8 months ago

"Such a great experience with Polley's Perfect Seasons. Jim and Zach came out when I'd run out of options with another company. They diagnosed the issue and proposed a solution and they delivered! I no…"

Z

Zach H.

Dec 2025

Angi

"Everything went smooth. Very pleased with results."

L

Lily Frazier

a year ago

"We love Tony Kimberland! We always know we will get service we can count on. But to have Zach and the Polley team today working on the tankless water system was truly a great experience."

S

Stephanie M.

Jul 31, 2025

"After using a local company that turned out to be dishonest, I called Polley's Perfect Seasons and have been calling on them since. They are honest, straight forward, comical, and hard working. If you…"

K

Kerri Drummond

9 years ago

"Polley's was recommended to us by a friend. Put in AC and furnace and they did a good job. They came back and fixed our hot water heater a few days later as it went on the blink and they had to come l…"

J

J Barrow

a year ago

"Very timely and professional service. Polley's Perfect Seasons is the one stop shop for your furnace, air conditioner, water heater and water softener solutions. Give them a try. You won't be disappoi…"

Z

Zach Cox

a year ago

"The tech was professional, on time, and honest. Had my furnace and water heater serviced in a timely fashion. I highly recommend Polley's."

R

Ryan Jenkinson

2 days ago

"Had a great experience with Polley's Perfect Seasons. Tony came out to take a look at our AC system that wasn't running properly, and instead of jumping straight to a full replacement like another com…"

Daikin Comfort Pro certified equipment lineup installed by Polley's Perfect Seasons in Plainfield, IN

Factory-Certified

Polley's Perfect Seasons is a Daikin Comfort Pro

We're one of the few Daikin Comfort Pro Certified dealers in the Indianapolis area - the top tier in Daikin's dealer program. That status is earned, not bought: factory training on every product line, NATE-certified technicians, ACCA membership, an A+ BBB record, and a continuous-improvement audit on installation quality. For you, it means longer warranties, exclusive rebates, and equipment installed exactly the way Daikin engineered it.

  • Up to 12-year parts warranty on qualifying Daikin systems - reserved for Comfort Pro dealers.
  • Instant rebates up to $1,100 on the Daikin Fit and other premium systems - no mail-in forms.
  • 0% financing for 18 months through Daikin's preferred lender, payments as low as $90/month.
  • Factory-trained on every product line - Fit, gas furnaces, heat pumps, communicating thermostats, and IAQ accessories.
Current Offers

Save when you book this season

Stack any of these with your service call - no coupons, no fine-print games.

Financing
01

0% Financing for 18 Months

No interest, no payments for 18 months on qualifying installs. New systems as low as $90/month.

Winter Comfort
02

$899 AprilAire Bypass Humidifier

Basic AprilAire bypass humidifier installation for compatible forced-air heating systems.

Heroes
03

10% Off for Community Heroes

Active or retired military, veterans, first responders, and educators save 10% on every service.

Local & Nearby

Serving Plainfield & all of Hendricks County

Our Plainfield headquarters covers a 25 miles radius - Avon, Brownsburg, Mooresville, Danville, and the Indianapolis west side. Our Clayton shop (20 miles radius) handles Stilesville, Belleville, Hazelwood, and Monrovia. Same crew, same warranty, same response time.

Plainfield HQ

564 Northfield Rd
Plainfield, IN 46168

Clayton Shop

4870 Iowa St
Clayton, IN 46118

PlainfieldClaytonAvonBrownsburgMooresvilleDanvilleStilesvilleBellevilleHazelwoodMonroviaIndianapolis West Side

Polley's Perfect Seasons on Google Maps · Plainfield, IN

Don't wait. Call now and we'll be on the way.

Real Plainfield technicians answering 24/7. Fast service most days. Call (317) 649-8749 now.