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Timestamp
What type of geothermal system did you have installed?
Retrofit install (replacing a previous HVAC system) or part of new construction
Brand/Unit of Heat Pump
How many tons (if multiple units, include both separately)
Loopfield Orientation
Additional Loopfield Information (size, number of wells)
Total Cost (before incentives)Total Cost (after incentives)Extras that would increase the cost (ex: Water heater, Ductwork)CountryState/ProvinceCity/Town
Size of Heated Space (sqft)
Company Used To Install System
Date of Receiving a Quote (Approximate)
Number of Months from Signature to Installation of SystemNumber of years you have owned system
Are you satisfied with your purchase?
Additional Comments (i.e. why you're not satisfied, things you want to tell others, favorite color)
Do you live in a heating or cooling dominated climate
Summer Inside Temperature Setpoint (Fahrenheit)
Typical entering water temperature in peak summer (Fahrenheit)
Winter Inside Temperature Setpoint (Fahrenheit)
Typical entering water temperature in peak winter (Fahrenheit)
Outside Temperature (Fahrenheit) before AUX heating kicks in (if no AUX heating or unsure, skip)
Approximate annual bill from heat pump (heating and cooling)Cost of electricity ($/kWh)Does your system have a desuperheater?If you owned a geothermal heat pump prior to your current system, approximately how many years did it last before needing to be replaced?
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2/21/2023 10:38:36Forced AirRetrofitWaterfurnace 75Horizontal9 rows. 600 feet each. Slinky$48,500$24,500United StatesNYSouth of Buffalo3500Buffalo Geothermal6/8/202240.5YesAirflow was very loud in ducts (fixed via DiY labor). Unit mounted on outdoor plastic pad instead of vibration dampening padHeating726433-15$800$0.14Yes
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2/21/2023 19:34:50Forced AirRetrofitTetco5Horizontal6 ton, 3600ft $33,000$27,000New supply and return trunk linesCanadaOntario Milton2700Waterloo Energy Products 9/9/202260YesHeating2222Not yet known 0.11 on average NoN/a
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2/22/2023 8:00:06Water-to-waterRetrofitAaon3Vertical1 well$37,675$22,350Oil tank and boiler removal, electric water tank installationUnited StatesNYOssining2100Dandelion6/15/20192.54YesIt’s awesome not having to get oil deliveries or service a boilerHeating7070Yes
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2/22/2023 13:40:02Forced AirRetrofitDandelion/Enertech6Vertical2x300ft$56,42580 gallon heat pump water heater, aeroseal, ductwork zoning replacementUnited StatesMAStow2406Dandelion7/25/2022TBD0¯\_(ツ)_/¯Heating$0.14No
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2/22/2023 18:56:13Forced AirRetrofitWater Furnace 7 indoor split4.5Vertical4 250ft wells$84,000does not include desuperheaterUnited StatesColoradoDenver3400Sensible2/14/2023Quoted and not installed. 25K for 5 ton of drilling costs alone.Heating72No
7
2/23/2023 17:25:17Forced AirRetrofitBosch Split4 and 3 TonVertical
Three wells (Two 300' manifolded service 4 ton, one 450' servicing 3 ton unit)
$63,000$44,100Lawn work +$7200, humidifier (included)United StatesNH3400Ultra Geothermal11/11/202180.5No4 Ton unit has not functioned well during heating season and it has been almost two months now that the system has been turned off. It was using way too much electricity and thus much more expensive to use than existing propane furnaceHeating786842TBD0.31NoNA
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3/2/2023 21:58:42Ductless mini-splitRetrofitSamsung DVM-S6Vertical2x 300 ft$100,250$30,1758 mini-split heads (accounting for ~30% of the price)United StatesNew YorkWhite Plains3,100Dandelion Energy7/7/2022>7 (still waiting for digging to begin)0¯\_(ツ)_/¯
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3/10/2023 13:06:05Forced AirNew ConstructionWaterfurnaceFour ton, two tonVerticalOne well$140,000$100,000United StatesNew Jersey Asbury2700Energy smarts mechanical3/10/2023¯\_(ツ)_/¯Balanced
10
3/23/2023 17:37:07Forced AirRetrofitWater Furnace 72.5, 2.5Vertical$90,000$58,700United StatesNew YorkWarwick2350Perfection Contracting2/15/202310Yes
Just finished install today! Contractor worked miraculously fast on my timeline. I got a similar quote from Dandelion for $85k. I'm not sure why my quotes were higher than most people's online, but I have a two zone setup with split units both in my basement. Assuming a single, packaged unit would've been cheaper, but I wanted to keep my two zones.
Heating70680.22Yes
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4/23/2023 17:14:54Forced AirRetrofitEnetertek 5Vertical$40,000$20,000United StatesNew York Merrick 1700Dandelion 1/2/2021151NoDandelion does not know how to install geothermal my recommendation choose a local company. Not a company with investors Heating71
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5/9/2023 1:28:04Forced AirRetrofitTetco4Horizontal$34,000$29,000CanadaOntarioGuelph 1700GeoSolar 4/24/202320YesHeating2224Too early to tell. $0.11No
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5/26/2023 17:26:09Forced AirRetrofitWaterFurnace5,2Vertical13 wells, each ~220 ftUnited StatesIllinoisArlington Hts4500They ar e no longer in business14YesHeatingTime of Use (TOU)Yes
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10/9/2023 11:24:32Forced AirRetrofitWater Furnace4Vertical$41,000$28,000United StatesOhio Cincinnati 3000Heating
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11/8/2023 0:32:36Water-to-waterRetrofitWaterFurnace5.9Vertical2 wells, 450 ft each$74,500$39,760electrical panel upgrade ($4608)United StatesVermont
It's a very small town, and we're the only geothermal, so prefer not to answer
2660 sq ftAGB Geothermal11/11/2022122 weeksYes
We chose water-to-water in order be able to use our existing cast iron radiators in an antique home. It has taken some effort to identify some very small leaks in the old radiators, which were causing air to get into the system, but once that was ironed out, it has been working well. The biggest challenge was getting all the tradespeople lined up. If one was available, another wasn't. Shipping delays and price increases over the last year also caused delays. It's not a process for the faint of heart, at this stage.
Cooling
We didn't have A/C, so ambient outdoor temp.
The entering temp doesn't fluctuate - 47120The entering temp doesn't fluctuate - 47We'll find out. 0.189No
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2/16/2024 13:48:44Forced AirRetrofit
Climatemaster Tranquility 30 in basement, air handler in attic
3Vertical2 wells, 260 ft deep each$52,000$26,000used existing ductwork, no water heaterUnited StatesNYSyosset1300https://www.gogreenenergy.com/8/1/202172Yes
Ron is a very good geo installer, responsive, knowledgeable. I wanted to find a Long Island installer for WaterFurnace, but after repeated calls and msgs, they never got back to me so I went w/ Ron and his company. Climatemaster is a good 2 stage heat pump too, reliable, not as much telemetry metrics to monitor vs WaterFurnace. I also evaluated Dandelion, wrote a review on reddit here: https://www.reddit.com/r/geothermal/comments/qbkaa4/comment/hhjg95d/?context=3 and decided against using them and glad I did since they have gotten out of the market of retrofit geothermal in Long Island https://www.newsday.com/business/dandelion-geothermal-w63o8zz1
Balanced755573314n/a, have solar net meteringn/a have solar net meteringNo
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2/21/2024 0:12:39Forced AirRetrofitClimateMaster Trinity QE453Vertical2 wells 240 feet deep 15 feet apart $45,000$24,000ClimateMaster hot water tankUnited StatesMDColumbia2200Barstow4/15/202370Yes
The Climate Master unit is great and the phone app gives you great information but the thermostat on the wall is pretty useless. It has a giant screen but will only show you the indoor temperature. Weather, set point, time, etc… are shown one at a time on a few second loop in 8 point font
Balanced72703916000.15Yes
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2/26/2024 21:54:12Forced AirNew ConstructionWaterFurnace 7 Series2x 3 tonVertical2x 375' vertical wells$87,331$61,132Water heater, Aprilaire air cleaners, Aprilaire humidifierUnited StatesPALancaster5000JK Mechnical9/1/202360Yes70
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3/9/2024 13:33:45Forced AirRetrofitWater Furnace5, 5Vertical10 wells$104,000$72,000United StatesTXNew Braunfels4800AW Mechanical Services8/11/202440.3Yesquiet, Cooling7258580.11No
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3/14/2024 16:21:05Forced AirRetrofitWaterfurnace 53Vertical2 wells, 270 feet deep each81000 CAD36000 CADCanadaQuebecGatineau2700RGCV11/14/202271YesDid not need auxiliary heating for the whole winter.Heating76577145-106000.05No
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3/17/2024 21:49:48Forced AirRetrofitHydron5Horizontal$34k CAD$29k CADUsed existing ductworkCanadaOntario3000GeoSolar8/1/202321Yes~$200/mo CAD to operate at coldest monthHeating7370$1,1000.12No
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4/9/2024 16:05:46Water-to-waterRetrofitBosch SM Series6VerticalRe-using existing field$25,000$24,000Ductwork, humidifierUnited StatesMichiganLivingston County55004/8/202422¯\_(ツ)_/¯I purchased the house in 2021. The existing system is a Carrier (unsure of part number). As of today, I have not installed this quoted system. I have a very similar quote for a Carrier GC.Heating67456745
no aux (use pellet stove instead)
40022
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5/13/2024 22:34:53Water-to-waterRetrofit4Vertical500’ deep$62,000$30,0003 zones, new ductworkUnited StatesNYSchenectady1990 sqftEnergy Catalyst Tech4/10/2024
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5/13/2024 22:41:35Water-to-waterRetrofitWater furnace 53Vertical$28,000$20,000United StatesOhio2700Federal elite6/1/202232YesBalanced7166No
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5/14/2024 12:38:40Forced AirRetrofitGeoStar3Horizontalone well$17,350$12,145new refrigerant lines set, new electrical--breaker addition, wiring pull and disconnentctUnited StatesVirginiaVirginia Beach2100DMS Mechanical2/21/202413 mos. YesCooling0.14No22 years and the compressor was still fine--air handler motor and refrigerant leak necessitated replacement.
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5/17/2024 6:16:46Forced AirNew ConstructionGeocomfort 4Vertical100 foot, 4 wells$18,870Included everything but water heater.United StatesIllinois Sadorus2392Bratchers3/10/2009315YesI was so thrilled with price I received but later realized our system is way oversized. We have issues keeping humidity in check during the ac season but are extremely satisfied during heating season.Balanced7268
We never need AUX but it’s there if we need it.
Yes
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5/17/2024 19:33:44Forced AirRetrofitWaterfurnace5Horizontal7 ton horizontal loop$50,000new duct supply/return headerCanadaOntarioWaterloo Region4000Delta Air Systems1/12/202430YesHeating72680.125Yes
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5/20/2024 9:34:41Forced AirRetrofitHydron Module YT0363Horizontal3 - 600' long loops (total 1800')$25,000$6,965United StatesNew YorkCuba19004/2/202410YesHeating69690.12Yes
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6/13/2024 22:05:33Forced AirRetrofitCarrier3Vertical4 wells$28,450$26,875United StatesIllinois Bloomington 2100Pro Air 5/7/202410¯\_(ツ)_/¯Balanced74No
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8/2/2024 8:32:33Forced AirRetrofitWater Furnace3Vertical2-375 ft wells$38,000$3,000United StatesMDFallston2050Ground Loop2/1/2023Did not acceptHave not installed yetThis was a quote that I did not accept.Heating
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8/30/2024 8:07:42Forced AirRetrofitGeoComfortUnited StatesVAChesapeake2100 sqft10 - 15¯\_(ツ)_/¯System cools for a little while then shuts down, several hours of being off and it works again. This is during the summer. It's been particularly hot out. Cooling69/7070
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10/17/2024 4:52:02Forced AirRetrofitDandelion4Vertical1$41,000$29,000United StatesMARowley2800Dandelion4/1/202460YesHeating7268Tbd0.18NoNo
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10/17/2024 13:26:59Forced AirRetrofitWaterFurnace 7 Series4Vertical1 vertical well, 400 ft. depth$59,327$35,528United StatesMarylandSilver Spring2398Total Comfort7/30/202420Yes
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12/6/2024 14:08:32Forced AirRetrofitDandelion3Vertical1$41,500$27,905NoneUnited StatesMARowley1700Dandelion5/24/20244<1¯\_(ツ)_/¯Balanced70Tbd6743Tbd0.18No
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1/6/2025 13:20:28Forced AirNew Construction
GeoStar Sycamore variable speed system with Fantec HRV
5Horizontal
3 trenches, 2 flow paths per trench, 7 ft deep/3 ft wide, 259 feet long
$76,121$42,787
quoted price includes excavation & installation, nonpressurized flow center for loop field, 10KW aux heat, 50 gal hot water buffer tank tied into desuperheater, zoning system, Symphony energy monitoring, sheet metal ductwork, and Fantec HRV included in price
United StatesNew YorkAuburn3100Green Guys Mechanical1/6/2025n/an/a¯\_(ツ)_/¯Owner/operator of the company seems extremely reasonable.
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1/12/2025 10:58:51Forced AirRetrofitHydron Module
5 ton packaged unit, 3 ton split unit
Vertical
2 loops across 3 wells, total depth 1100 feet
$140,000$98,000All new attic duct work; ERV; 5 Nest Thermostats, 5 heating zones, 4 cooling zones; Epic monitor and appUnited StatesNHRockingham County3500https://energysmartalternatives.com/3/28/2022121.5YesTotal cost after rebate were comparable to higher end heatpump quotes we received. Very satisfied with system performance. We also spent cash to weatherize attic.

We still heat DHW and bath radiant floors with oil boiler. Oil serves as AUX heat downstairs. Electric resistance strip serves as AUX heat in attic.
Heating72low 60s69mid 40s
settable via thermostat. We have S1, S2 and Aux for heating. Even on cold days, we do not see S2.
3470 kWh x $0.19 = $659.30 (oil DHW, radiant bath floor and Aux backup ~400 gallons of oil/year)
0.19No
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2/10/2025 21:54:45Forced AirNew ConstructionWater Furnace4Vertical500ft x 1 well$84,121457293 zonesUnited StatesNYPrivate3080Aztech2/29/202461YesHeating7471No
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3/21/2025 12:49:04Forced AirRetrofitDandelion6Horizontal$30,00019000United StatesNYSaratoga Springs3200Dandelion6/1/202164YesHeating726072320.17No
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4/16/2025 9:39:14Water-to-waterNew ConstructionFlorida3open$3,500$3,500$500United StatesSCColumbia1800Oswald HVAC8/30/197838YesVery efficient but I did have trouble with water shutoff valveCooling72547253$1,200$0.05No12
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4/18/2025 2:18:11Forced AirRetrofitWaterFurnace4Vertical$73,389+$8000 for ductwork if neededCanadaQuebecSaint-Georges2500Climatisation Crystal8/30/2024¯\_(ツ)_/¯Ignored my requirements, undersized the system, lied about govt incentives supposedly coming to an end soon, wasted my timeHeating
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4/18/2025 2:18:28Water-to-waterRetrofitGeoStar Optiheat5.5Vertical$91,636None included, heat pump and well onlyCanadaQuebecSherbrooke2500Climatisation Duplessis9/11/2024¯\_(ツ)_/¯Heating
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4/18/2025 23:09:58Forced AirRetrofitWater Furnace Series 52.5Vertical2 wells, 600 feet total$41,2787798New 50 gallon electric water heater and additional returns for $1200United StatesMaryland Bowie2144Love's Heating and Air3/24/2025Opted for an extra 100 feet of loop field to have extra capacity available later on incase we decided to do an addition on the houseBalanced73680.14Yes
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5/24/2025 15:06:27Forced AirRetrofitClimateMaster6Horizontal4, 746 ft x 40mm$10,000$6,000DIY install, paid for engineer to design system, excavator to trench and lay loop, and for transition to existing ductwork.United StatesConnecticutPlymouth3759DIY7/24/2013312YesClimateMaster has a known issue with evaporator coils developing leaks.Heating746812000.35Yes
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5/25/2025 2:58:33Ground New ConstructionGeoSource / RGS-W0726Vertical10 x 120 ft average$50,000United StatesAlaska27506/1/201212YesHeating33
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6/19/2025 16:50:42Forced AirRetrofitWaterfurnace 7 - Indoor Split2.5Vertical2 300-foot wells$52,813$28,251+1300 per additional truck of dirty water hauling. Space conditioning for the split system in current unconditioned garageUnited StatesColoradoFort Collins11526/1/20254 months estimate, 1 month updated proposalDrilling: $20,300 + $1,300 / truck for water disposal (at least 1). HVAC: $30,037. Electrical: $1,175. Heating7470
$0.12 off-peak Winter. $0.14 off-peak Summer.
No
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7/21/2025 21:08:30Forced AirRetrofitClimateMaster4Vertical5 ton, 2 wells$64,22734,458Insulated/retrofit existing ductwork, desuperheater and storage tankUnited StatesMassachusettsBoston2500Massachusetts Geothermal3/1/202530YesBoston permit process caused ~1 month delay in installHeating76Yes
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9/5/2025 9:53:45Forced AirRetrofitWaterFurnace Series 53Vertical$36,498$25,548United StatesMI
Grand Traverse County
~2600GeoFurnace8/1/202510Yes
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9/22/2025 14:56:33Water-to-waterRetrofitDaikinHorizontal$35,000United StatesMontana36002YesHeating7270$100/mo
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9/26/2025 18:30:22Forced AirRetrofitWaterfurnace 5 series4Horizontal$21,650$14,035New flow center United StatesWIHeating
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11/2/2025 22:00:20Forced AirRetrofitWaterfurnace4 ton, 4 tonVertical2x500’$110,000Water heater: $12,000United StatesNYWestchester County430010/1/20250Still choosing between quotes Balanced7667
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11/6/2025 12:03:33Forced AirNew ConstructionWaterfurnace 74Vertical$55,500$50,500Ductwork not included in totalUnited StatesNYEast Concord2000 sqftBuffalo Geothermal11/6/2025N/AScouting options for parents' new build
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