rollinbrian Posted August 25, 2022 Report Share Posted August 25, 2022 Is anyone familiar with this brand/company? Came across them while searching for tankless water heaters. https://rvmp.co/products/rvmp-flextemp-on-demand-gas-water-heater Quote 2017 Jayco Designer 37rs "Fiona" 2007 Volvo 670 "Henry" Link to comment Share on other sites More sharing options...
Chad Heiser Posted August 26, 2022 Report Share Posted August 26, 2022 Never heard of that brand before. We are on our second RV with an on demand water heater. Both were/are Truma tankless water heaters. We have been very happy with that brand over the last 5+ years. Quote 2000 Kenworth T2000 w/ Cummins N14 and autoshift 2017 DRV Mobile Suite 40KSSB4 with factory mods, dealer mods and personal mods - now in the RV graveyard 2022 DRV Full House MX450 with customized floor plan 2018 Polaris RZR Turbo S (fits in the garage) 2016 Smart Car (fits in the garage or gets flat towed behind the DRV when the RZR is in the garage)My First Solar Install ThreadMy Second Solar Install Thread & Photos and Documents Related to the buildMy MX450's solar, battery and inverter system - my biggest system yet! chadheiser.com West Coast HDT Rally Website Link to comment Share on other sites More sharing options...
rollinbrian Posted August 26, 2022 Author Report Share Posted August 26, 2022 16 hours ago, Chad Heiser said: Never heard of that brand before. We are on our second RV with an on demand water heater. Both were/are Truma tankless water heaters. We have been very happy with that brand over the last 5+ years. How well do those work boondocking in Colorado @ 18f ? We don't stay in the cold much but those few nights as we transition from warm place to warm place would be a concern. Quote 2017 Jayco Designer 37rs "Fiona" 2007 Volvo 670 "Henry" Link to comment Share on other sites More sharing options...
Chad Heiser Posted August 27, 2022 Report Share Posted August 27, 2022 (edited) 5 hours ago, rollinbrian said: How well do those work boondocking in Colorado @ 18f ? We don't stay in the cold much but those few nights as we transition from warm place to warm place would be a concern. The tankless Truma water heater works very well. I wouldn’t own an RV without it based on our experiences. So far the coldest temps we have seen in a rig with the Truma were right around freezing. We had no issues. The trailer was nice and toasty with the forced air furnace and the Truma performed with no issues. I don’t see any reason why it wouldn’t perform in colder temperatures as long as there is a sufficient water supply available. Edited August 27, 2022 by Chad Heiser Quote 2000 Kenworth T2000 w/ Cummins N14 and autoshift 2017 DRV Mobile Suite 40KSSB4 with factory mods, dealer mods and personal mods - now in the RV graveyard 2022 DRV Full House MX450 with customized floor plan 2018 Polaris RZR Turbo S (fits in the garage) 2016 Smart Car (fits in the garage or gets flat towed behind the DRV when the RZR is in the garage)My First Solar Install ThreadMy Second Solar Install Thread & Photos and Documents Related to the buildMy MX450's solar, battery and inverter system - my biggest system yet! chadheiser.com West Coast HDT Rally Website Link to comment Share on other sites More sharing options...
Kirk W Posted August 27, 2022 Report Share Posted August 27, 2022 6 hours ago, Chad Heiser said: I don’t see any reason why it wouldn’t perform in colder temperatures as long as there is a sufficient water supply available. Are they protected from freezing when not operating in extreme cold weather? There were several home tankless water heaters in this area that froze up and were damaged in the big freeze power outages back in Feb. of 2021. Quote Good travelin !...............KirkFull-time 11+ years...... Now seasonal travelers.Kirk & Pam's Great RV Adventure Link to comment Share on other sites More sharing options...
Ray,IN Posted August 27, 2022 Report Share Posted August 27, 2022 (edited) I share Kirk's concern. I've thought about it and it seems to be a simple task to incorporate a temperature sensor and freeze protection in these units, but would use LP in the process. The better 120V units usually have freeze protection built-in, but only when you have electric power. The RVMP is gas ( I assume Propane). One gallon of propane contains 96,452 BTU, the RVMP consumes 65,000 BTU (both figures are per hour). This means the RVMP consumes approx. 3/4G propane per hour of operation, in addition to your normal LP usage. What I cannot find on their website is the temperature rise in degrees, which IMO is quite important during cold weather. Edited August 27, 2022 by Ray,IN Quote 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
Dutch_12078 Posted August 27, 2022 Report Share Posted August 27, 2022 (edited) From the RVMP "Details": "...the RVMP RV Flex Temp On-Demand Water Heater comes equipped with industry-first safety features like a carbon monoxide detector, propane leak detector, anti-freezing system, and anti-scald system." (emphasis added) Edited August 27, 2022 by Dutch_12078 Quote Dutch 2001 GBM Landau 34' Class A F-53 Chassis, Triton V10, TST TPMS 2011 Toyota RAV4 4WD/Remco pump ReadyBrute Elite tow bar/brake system Link to comment Share on other sites More sharing options...
rollinbrian Posted August 28, 2022 Author Report Share Posted August 28, 2022 3 hours ago, Dutch_12078 said: From the RVMP "Details": "...the RVMP RV Flex Temp On-Demand Water Heater comes equipped with industry-first safety features like a carbon monoxide detector, propane leak detector, anti-freezing system, and anti-scald system." (emphasis added) It does seem to have some nice features, freeze protection being at the top of my list. Now to find out if it's reliable or junk, preferably prior to purchase. Quote 2017 Jayco Designer 37rs "Fiona" 2007 Volvo 670 "Henry" Link to comment Share on other sites More sharing options...
Ray,IN Posted August 28, 2022 Report Share Posted August 28, 2022 4 hours ago, Dutch_12078 said: From the RVMP "Details": "...the RVMP RV Flex Temp On-Demand Water Heater comes equipped with industry-first safety features like a carbon monoxide detector, propane leak detector, anti-freezing system, and anti-scald system." (emphasis added) Thanks for catching that Dutch, I was focused on finding the temperature rise and skipped right over that paragraph. The only thing I can find about temp.-rise is the inflow reduction when incoming temp. is low. Perhaps that feature insures really hot water outflow regardless. Quote 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
Dutch_12078 Posted August 28, 2022 Report Share Posted August 28, 2022 34 minutes ago, rollinbrian said: It does seem to have some nice features, freeze protection being at the top of my list. Now to find out if it's reliable or junk, preferably prior to purchase. Good things to know, but I can't help you with them. Sorry... Quote Dutch 2001 GBM Landau 34' Class A F-53 Chassis, Triton V10, TST TPMS 2011 Toyota RAV4 4WD/Remco pump ReadyBrute Elite tow bar/brake system Link to comment Share on other sites More sharing options...
Dutch_12078 Posted August 28, 2022 Report Share Posted August 28, 2022 1 minute ago, Ray,IN said: Thanks for catching that Dutch, I was focused on finding the temperature rise and skipped right over that paragraph. The only thing I can find about temp.-rise is the inflow reduction when incoming temp. is low. Perhaps that feature insures really hot water outflow regardless. Could be, but I'm not sure the reduction makes for a comfortable shower... Quote Dutch 2001 GBM Landau 34' Class A F-53 Chassis, Triton V10, TST TPMS 2011 Toyota RAV4 4WD/Remco pump ReadyBrute Elite tow bar/brake system Link to comment Share on other sites More sharing options...
Ray,IN Posted August 28, 2022 Report Share Posted August 28, 2022 I read it has an 8.5kg/min production capacity, that equals 2.5 GPM, not bad when one considers the cold water flow rate to the shower too. Quote 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
Dutch_12078 Posted August 28, 2022 Report Share Posted August 28, 2022 4 minutes ago, Ray,IN said: I read it has an 8.5kg/min production capacity, that equals 2.5 GPM, not bad when one considers the cold water flow rate to the shower too. But how much is the flow rate reduced when the input water temp is low? That would also mean lowering the cold water flow to maintain the same shower temperature. Quote Dutch 2001 GBM Landau 34' Class A F-53 Chassis, Triton V10, TST TPMS 2011 Toyota RAV4 4WD/Remco pump ReadyBrute Elite tow bar/brake system Link to comment Share on other sites More sharing options...
Chad Heiser Posted August 30, 2022 Report Share Posted August 30, 2022 On 8/27/2022 at 7:09 AM, Kirk W said: Are they protected from freezing when not operating in extreme cold weather? There were several home tankless water heaters in this area that froze up and were damaged in the big freeze power outages back in Feb. of 2021. There are two versions of the Truma tankless water heater. The plus version is designed to operate in below freezing temperatures. The below information is from Truma’s website. This is the only on demand tankless water heater I have experience with and both of the ones I have used were OEM equipment in my DRV 5th wheels. AquaGo Models Truma AquaGo comfort Truma Hybrid Technology keeps temperature constant - no scalding Continuous supply of consistent hot water Simple open "Easy Drain Lever" - Winterization done Exclusive decalcification technology - extends life and maintains performance Ability to install the optional antifreeze kit Truma AquaGo comfort plus Truma Hybrid Technology keeps temperature constant - no scalding Continuous supply of consistent hot water Simple open "Easy Drain Lever" - Winterization done Exclusive decalcification technology - extends life and maintains performance Ability to install the optional antifreeze kit The industry's only true instant water heater ensuring hot water at every tap, any time can be used even during freezing temperatures Quote 2000 Kenworth T2000 w/ Cummins N14 and autoshift 2017 DRV Mobile Suite 40KSSB4 with factory mods, dealer mods and personal mods - now in the RV graveyard 2022 DRV Full House MX450 with customized floor plan 2018 Polaris RZR Turbo S (fits in the garage) 2016 Smart Car (fits in the garage or gets flat towed behind the DRV when the RZR is in the garage)My First Solar Install ThreadMy Second Solar Install Thread & Photos and Documents Related to the buildMy MX450's solar, battery and inverter system - my biggest system yet! chadheiser.com West Coast HDT Rally Website Link to comment Share on other sites More sharing options...
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