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frontpagetunabreath posted Jul 17, 2026 12:30 PM

9.9 GPM 180000 BTU RHEEM Tankless On Demand Water Heater + 11% Mail-In Rebate

$700

$1,000

30% off
& More + Free Pickupat Menards
13.9K Views
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Deal Details
Menards has RHEEM Tankless On Demand Water Heaters (Various) + 11% Menards Mail-In Rebate Credit on sale as listed below from $699.99. Select free pickup via shipping to store where stock permits.

Thanks to Community Member tunabreath for sharing this deal.

Note: See this page for mail-in-rebate details. Rebate terms are below. Availability for pickup may vary by location.

Available:
Product Details:
  • Premium Internal Construction: Features a stainless steel heat exchanger and copper components engineered for durability and extended product life.
  • Faster, Flexible Installation: Designed for easy setup with built-in recirculation, extended venting options, and compatibility with standard gas lines—helping save time and reduce installation costs.
  • High-Efficiency Condensing Design: Advanced condensing technology captures more heat for a 0.94 UEF rating, helping reduce energy usage and lower operating costs.

Editor's Notes

Written by Nate650 | Staff
  • Rebate terms:
    • Mail your rebate receipt(s) and completed rebate redemption form to the address on the redemption form
    • You will receive your Menards merchandise credit check in the mail. (Please allow 6-8 weeks for processing.)
    • Rebates are provided in the form of a Menards Merchandise Credit Check valid towards purchases at any Menards retail store. Not valid for purchases on MENARDS.COM.
  • About this deal:
    • Our research indicates that this deal, excluding the rebate, for the RTGH-RH10DVLP, is $891.01 less (56% savings) than the next best available price from a reputable merchant with prices starting from $1591 at the time of this post.
  • Additional notes:

Original Post

Written by tunabreath
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Menards has RHEEM Tankless On Demand Water Heaters (Various) + 11% Menards Mail-In Rebate Credit on sale as listed below from $699.99. Select free pickup via shipping to store where stock permits.

Thanks to Community Member tunabreath for sharing this deal.

Note: See this page for mail-in-rebate details. Rebate terms are below. Availability for pickup may vary by location.

Available:
Product Details:
  • Premium Internal Construction: Features a stainless steel heat exchanger and copper components engineered for durability and extended product life.
  • Faster, Flexible Installation: Designed for easy setup with built-in recirculation, extended venting options, and compatibility with standard gas lines—helping save time and reduce installation costs.
  • High-Efficiency Condensing Design: Advanced condensing technology captures more heat for a 0.94 UEF rating, helping reduce energy usage and lower operating costs.

Editor's Notes

Written by Nate650 | Staff
  • Rebate terms:
    • Mail your rebate receipt(s) and completed rebate redemption form to the address on the redemption form
    • You will receive your Menards merchandise credit check in the mail. (Please allow 6-8 weeks for processing.)
    • Rebates are provided in the form of a Menards Merchandise Credit Check valid towards purchases at any Menards retail store. Not valid for purchases on MENARDS.COM.
  • About this deal:
    • Our research indicates that this deal, excluding the rebate, for the RTGH-RH10DVLP, is $891.01 less (56% savings) than the next best available price from a reputable merchant with prices starting from $1591 at the time of this post.
  • Additional notes:

Original Post

Written by tunabreath

Community Voting

Deal Score
+37
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Top Comments

greymoose
1256 Posts
714 Reputation
Yup. White vinegar, 2 hoses, bucket, and 1/5 or 1/6 HP submersible pump. Takes me about a half hour.
though
273 Posts
167 Reputation
If you are in a hard water region, flush it once/year. It's super simple.

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40 Comments

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Jul 17, 2026 1:29 PM
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NaPra
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Jul 17, 2026 1:29 PM
2,091 Posts
Menards: Rheem Prestige Tankless Natural Gas or Liquid Propane [menards.com] Water Heaters $699.99 - $799.99 with $77 - $88 Mail-In Credit + Free Ship to Store
Last edited by NaPra July 17, 2026 at 06:31 AM.
Jul 17, 2026 2:24 PM
98 Comments
Joined Mar 2019
BasilrayJul 17, 2026 2:24 PM
98 Posts
I had no idea Menard's carried Rheem anywhere. I thought Rheem was basically an HD brand at this point.

Either way, I'm going to be in need of a new water heater, and I've been eyeing these.
Jul 17, 2026 4:09 PM
286 Comments
Joined Feb 2008
poorSAPJul 17, 2026 4:09 PM
286 Posts
Are these more efficient than a tank water heater? 180,000 BTU is huge. Plus I read these need to be cleaned on a yearly basis
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Jul 17, 2026 4:43 PM
12.2K Comments
Joined Jun 2011
tunabreathJul 17, 2026 4:43 PM
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12,195 Posts
Quote from Basilray :
I had no idea Menard's carried Rheem anywhere. I thought Rheem was basically an HD brand at this point.Either way, I'm going to be in need of a new water heater, and I've been eyeing these.
Menard's in house brand of water heaters are manufactured by Rheem.
1
Jul 17, 2026 4:52 PM
218 Comments
Joined Mar 2013
quickstangJul 17, 2026 4:52 PM
218 Posts
In the same boat with new build. Trying to decide on roughly 75 gallon tank or 11GPM tankless.

Yes, I was told cleaning once or twice a year.

I guess the cost and install difference for me with a new build. Standard is 50 gallon so I would be paying the difference between that and either the 75 (no extra install costs) or the tankless. And probably extra install costs.
Jul 17, 2026 4:58 PM
309 Comments
Joined Jan 2011
MrNiceJul 17, 2026 4:58 PM
309 Posts

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Quote from poorSAP :
Are these more efficient than a tank water heater? 180,000 BTU is huge. Plus I read these need to be cleaned on a yearly basis
I haven't had my tankless water heater cleaned since it was installed 15 years ago and it still works fine lol. We don't have hard water though so YMMV
1
Jul 17, 2026 10:05 PM
273 Comments
Joined Sep 2007
thoughJul 17, 2026 10:05 PM
273 Posts

Our community has rated this post as helpful. If you agree, why not thank though

If you are in a hard water region, flush it once/year. It's super simple.
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Jul 18, 2026 1:15 AM
1.3K Comments
Joined Jul 2007
greymooseJul 18, 2026 1:15 AM
1,256 Posts

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Quote from though :
If you are in a hard water region, flush it once/year. It's super simple.
Yup. White vinegar, 2 hoses, bucket, and 1/5 or 1/6 HP submersible pump. Takes me about a half hour.
6
Jul 18, 2026 9:27 AM
48 Comments
Joined Nov 2018
CMDTechJul 18, 2026 9:27 AM
48 Posts
Quote from greymoose :
Yup. White vinegar, 2 hoses, bucket, and 1/5 or 1/6 HP submersible pump. Takes me about a half hour.
My water heater is from 1971, never touched it. Still works like a champ.
4
1
Jul 18, 2026 1:19 PM
307 Comments
Joined Dec 2007
brettaculousJul 18, 2026 1:19 PM
307 Posts
Quote from quickstang :
In the same boat with new build. Trying to decide on roughly 75 gallon tank or 11GPM tankless. Yes, I was told cleaning once or twice a year. I guess the cost and install difference for me with a new build. Standard is 50 gallon so I would be paying the difference between that and either the 75 (no extra install costs) or the tankless. And probably extra install costs.
A good power vent can make hot water almost as fast as a tankless.
Jul 18, 2026 1:48 PM
1K Comments
Joined Aug 2010
joedtxJul 18, 2026 1:48 PM
1,039 Posts

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Please do you research on the plumbing forums Rheem doesn't have the greatest of reputations on tankless but YMMV like all things.

Plumbing Factors:

1. Water quality effects EVERYTHING regardless of tank or tankless.
2. Don't brag about how old your tank is and that you've done nothing....EVERYTHING BREAKS
3. Avoid big box stores if you are needing a new water heater, plumbing supply are usually priced equal and always offer a higher tier product.
4. Tanks aren't for everyone, and Tankless isn't for everyone do what works best for YOU don't buy into sales marketing. Research and facts are your friend.
3
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Jul 18, 2026 3:04 PM
1.3K Comments
Joined Jul 2007
greymooseJul 18, 2026 3:04 PM
1,256 Posts
Quote from CMDTech :
My water heater is from 1971, never touched it. Still works like a champ.
Wow. Do you have hard water? I honestly didn't know they made them back then. I'm sure that 50+ years later, they have grown more complicated with tighter tolerances and more efficiency and might need a bit more maintenance. My family's cabin in CO has an electric tank water heater from 1962 which actually rolled down a rocky hill when they unloaded it from the truck (side is still dented), but it still functions fine. No hard water, drained every year for winterizing, and stuff was built differently back then.
Jul 18, 2026 3:07 PM
1.3K Comments
Joined Jul 2007
greymooseJul 18, 2026 3:07 PM
1,256 Posts
Quote from greymoose :
Wow. Do you have hard water? I honestly didn't know they made them back then. I'm sure that 50+ years later, they have grown more complicated with tighter tolerances and more efficiency and might need a bit more maintenance. My family's cabin in CO has an electric tank water heater from 1962 which actually rolled down a rocky hill when they unloaded it from the truck (side is still dented), but it still functions fine. No hard water, drained every year for winterizing, and my parents' a/c unit was from 1972 and still worked fine when they replaced it in 2023 (no maintenance ever). Stuff was built differently back then.
Also this:
Last edited by greymoose July 18, 2026 at 08:12 AM.
Jul 18, 2026 3:30 PM
48 Comments
Joined Nov 2018
CMDTechJul 18, 2026 3:30 PM
48 Posts
Quote from greymoose :
Wow. Do you have hard water? I honestly didn't know they made them back then. I'm sure that 50+ years later, they have grown more complicated with tighter tolerances and more efficiency and might need a bit more maintenance. My family's cabin in CO has an electric tank water heater from 1962 which actually rolled down a rocky hill when they unloaded it from the truck (side is still dented), but it still functions fine. No hard water, drained every year for winterizing, and stuff was built differently back then.
Central Iowa here, I've never seen lime deposits or had issues with hard water therefore I've never tested. I do not have a whole house water filter but if I had to do it all over again I highly recommend whole house filters, they easily last upwards of 10 years and can easily save their cost on appliances and maintenance over the life of your appliances, not to mention your health.

My TDS readings from my Zerowater filters are in the 150ish range but our water in Iowa is notorious for having high nitrates, pesticides and insecticides from agricultural and livestock run off.

My original post was a bit of a jab at the enshiftifcation epidemic we are all suffering through in a late stage capitalist system of government. If I'm in the market for appliances, car parts, etc. I tend to look first at the older appliances like old but still new stock or even used from refurbishers who would warranty and repair. I also look at parts availability and serviceability before I would even consider buying something new.

Even with a 5-10 year warranty on new appliances, that is designed to fail and no longer repairable we as a species are heading toward WALL-E world unless we pivot to sustainable everything.
Last edited by CMDTech July 19, 2026 at 09:11 PM.
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Jul 18, 2026 3:40 PM
48 Comments
Joined Nov 2018
CMDTechJul 18, 2026 3:40 PM
48 Posts
Quote from greymoose :
Also this:
Touche!!

I often wonder how many people reading this/these comments are here because they're "new" unit took a 💩 or if they're worried their old unit might and are sucked in to purchasing due to fear.

Also:
https://youtu.be/P9WFpVsRtQg?is=Jjuvwk7KErARgGp5

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