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--- heatpump_research [2022.08.17 18:07] – Steve Isenberg
+++ heatpump_research [2022.08.19 11:54] (current) – [Heatpump Model and Installer Research] Steve Isenberg
@@ Line 4: / Line 4: @@
 August 2022, we are looking into buying and installing one or more heatpumps for our oil-heated forced-hot-water home to reduce our winter oil use and to give us some cooling during the summer heat/humidity.
-Installers with positive comments
+===Heat pump installers===
+|< 100% 5% 20% 25% - >|
 ^<fs x-small>Commenter</fs>^Company^Contact info^Comments^
-|<fs x-small>AS MS WR</fs>|NETR Heating and Cooling Systems, Woburn|781-933-6387 https://www.netrinc.com/|Good tech service & knowledgeable technicians|
+|<fs x-small>AS MS WR</fs>|NETR Heating and Cooling Systems (Woburn)|https://www.netrinc.com/ 781-933-6387 |Good tech service & knowledgeable technicians|
-|<fs x-small>MM</fs>|Muirfield Electric|https://muirfieldmechanical.com/|did what they said they'd do, on schedule, middle-of-road price, no extra fuss|
+|<fs x-small>MM NA</fs>|Muirfield Electric (Ayer)|https://muirfieldmechanical.com/ 978-263-7130|did what they said they'd do, on schedule, middle-of-road price, no extra fuss|
-|<fs x-small>RK</fs>|128 Heating and Plumbing|https://www.128plumbing.com/|
+|<fs x-small>RK</fs>|128 Heating and Plumbing (Wakefield)|https://www.128plumbing.com/ 781-670-3261|(annoying website, can't get rid of stuff covering info)|
-|<fs x-small>AW</fs>|Central Cooling and Heating of Woburn| |they did rebate paperwork, good company. |
+|<fs x-small>AW</fs>|Central Cooling and Heating (Woburn)|https://centralcooling.com/ 800-236-8725|they did rebate paperwork, good company. |
-|<fs x-small>RR CL JL</fs>|Total Comfort, Burlington|https://www.totalcomfortmech.com/burlington|Good consultation, communication. helped w/MassSave|
+|<fs x-small>RR CL JL</fs>|Total Comfort (Burlington)|https://www.totalcomfortmech.com/lexington 781-999-1275, 781-697-9016|Good consultation, communication. helped w/MassSave|
-|<fs x-small>JL MA</fs>|NetZero| |Heat pumps is their business (not sideline)|
+|<fs x-small>JL MA</fs>|NetZero Heating and Air Conditioning (Billerica)|https://netzerohvac.net/ 888-306-3893| |
+|<fs x-small>WT</fs>|New England Ductless (Boston)|https://www.newenglandductless.com/ 781-995-2665|Did MassSave paperwork. Charges $750 for Manual-J (detailed technical assessment)|
+| |Homeworks Energy| |met with Brian 8/18/2022, got quote|
+| |Tetra| |met virtually with Parish 8/19/2022, got quote|
-Devices with positive comments
+===Heat pump devices===
-  * Mitsubishi
+|Mitsubishi|high demand, long lead times (8+ months?)|
-  * Bosch
+|Bosch|
-  * Daikin
+|Daikin|
+|LG|One Lex List member reported issues with non-LG thermostat; system would stay on, but this might be related to the usage learning curve; pressure relief valve issue; be sure to verify experience of installers and techs|
+|Samsung|Sold/installed by Homeworks|
+|Gree|Sold/installed by Tetra|
+Note that whatever heat pump you choose, to get rebates, it has to be on the MassSave list, see: [[https://www.masssave.com/saving/residential-rebates/air-source-heat-pumps/heat-pump-qualified-list]]
 ====Concerns to address====
   * Will your electrical feed need to be upgraded?  (If you have 200 Amp service, will that be enough to support one or more heat pumps?)
   * Temperature range. Make sure your units can handle the temps in our area (eg, -20 to 110F)
+  * Will the unit work with your existing thermostat or must it be replaced?
+  * Will (and if so how will) heat pump work with existing home heating system?
+  * Verify experience of Installers and Tech support
 ====Ideas====
   * Get wall units for rooms with doors you can close (to isolate heat/cool to the room)
   * Heat pump for your hot water. will chill your basement if it's in the basement
+----
+====Analysis & Comparison, heat pump vs oil boiler====
+We got a quote from a company for the cost of a whole-house solution.  There are two rebates available to us, approx $5k since we're going whole-house, and $10k if we also sign an agreement that we will only use oil heat in an emergency.
+Description of quoted system: TBD
+===Assumptions===
+We have an oil-fueled boiler forced hot water heating system. We have a single window air conditioner that the heat pumps would replace.  Here are the cost factors for our situation.
+Assuming for the purpose of this analysis:
+  * Energy costs stay the same over the analysis period (oil and electricity)
+  * Maintenance costs stay the same over the analysis period
+  * We are not considering electricity savings by using heat pumps over the one window air conditioner we're using
+===Cost analysis===
+<csv hdr_rows=1>
+,"Homeworks
+Whole house","Tetra
+Whole house","Oil heat only
+Whole house"
+Condensers,20k & 20k,24k & 24k,
+Heads,"7k, 12k","9k, 12k",
+,"7k, 7k, 9k","9k, 9k, 9k",
+Manufacturer,Samsung,Gree,
+Works to temp,,-22F,
+Manual J?,,"Yes, no cost",
+Wifi to heads?,,Yes ,
+Service?,1st yr included then pay,"1st yr included, then thru installer",annual cleaning
+"FYI, Heat loan: 7 yrs no int, monthly:",214.29,115.37,
+'===TOTAL COST CALCULATION===,,,
+Eqpt & installation,28000,19691,0
+whole house rebate,10000,10000,0
+EQUIPMENT & INSTALL cost,18000,9691,0
+heatpump MAINTENANCE/yr after 1st yr,535,,0
+oil boiler MAINTENANCE/yr,200,200,200
+electric svc incremement $/mo (est),100,100,
+gallons oil/year (est),100,100,700
+oil cost/gal (est),4,4,4
+ENERGY COST/yr,1600,1600,2800
+,,,
+TOTAL COST END OF YEAR,,,
+,19800,11491,3000
+,22135,13291,6000
+,29140,18691,15000
+,31475,20491,18000
+,33810,22291,21000
+,36145,24091,24000
+,38480,25891,27000
+,40815,27691,30000
+,52490,36691,45000
+,64165,45691,60000
+,75840,54691,75000
+</csv>
+IF YOU HAVE COMMENTS on this, please let us know! Send to: both@toku.us
+and THANK YOU for your input.