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heatpump_research [2022.08.19 11:38] – [Analysis & Comparison, heat pump vs oil boiler] Steve Isenbergheatpump_research [2022.08.19 11:54] (current) – [Heatpump Model and Installer Research] Steve Isenberg
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 |<fs x-small>JL MA</fs>|NetZero Heating and Air Conditioning (Billerica)|https://netzerohvac.net/ 888-306-3893| | |<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)| |<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|+| |Homeworks Energy| |met with Brian 8/18/2022, got quote| 
 +| |Tetra| |met virtually with Parish 8/19/2022, got quote|
  
 ===Heat pump devices=== ===Heat pump devices===
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 |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| |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|+|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]] 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]]
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 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. 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.
  
-”Heatpump” is cost of heat pumps installed.  ”Heatpump w/agreement” is when we also sign an agreement saying we will only use oil to heat the house in an emergency. +Assuming for the purpose of this analysis:
-| |Heatpump|Heatpump w/agreement|Oil Boiler only (current situation)| +
-|Equipment|23000|18000|0|cost of added equipment| +
-|Maintenance/yr|835|200| +
-|Electricity increment estimate/yr|1200|1200|0|assuming extra $100/month for heat pumps| +
-|Est cost oil, 700gal/yr, $4/gal|100 gal@$4/gal=400 |100 gal@$4/gal |700 gal@$4/gal=2800|//need oil to heat hot water//| +
-Also assuming for the purpose of this analysis:+
   * Energy costs stay the same over the analysis period (oil and electricity)   * Energy costs stay the same over the analysis period (oil and electricity)
   * Maintenance costs stay the same over the analysis period   * Maintenance costs stay the same over the analysis period
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 ===Cost analysis=== ===Cost analysis===
 <csv hdr_rows=1> <csv hdr_rows=1>
 +
 +
 ,”Homeworks ,”Homeworks
 Whole house”,”Tetra Whole house”,”Tetra
 Whole house”,”Oil heat only Whole house”,”Oil heat only
 Whole house” 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 Eqpt & installation,28000,19691,0
 whole house rebate,10000,10000,0 whole house rebate,10000,10000,0
 EQUIPMENT & INSTALL cost,18000,9691,0 EQUIPMENT & INSTALL cost,18000,9691,0
-heatpump MAINTENANCE/yr after 1st yr,635,,0+heatpump MAINTENANCE/yr after 1st yr,535,,0
 oil boiler MAINTENANCE/yr,200,200,200 oil boiler MAINTENANCE/yr,200,200,200
 electric svc incremement $/mo (est),100,100, electric svc incremement $/mo (est),100,100,
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 TOTAL COST END OF YEAR,,, TOTAL COST END OF YEAR,,,
 1,19800,11491,3000 1,19800,11491,3000
-2,22235,13291,6000 +2,22135,13291,6000 
-5,29540,18691,15000 +5,29140,18691,15000 
-6,31975,20491,18000 +6,31475,20491,18000 
-7,34410,22291,21000 +7,33810,22291,21000 
-8,36845,24091,24000 +8,36145,24091,24000 
-9,39280,25891,27000 +9,38480,25891,27000 
-10,41715,27691,30000 +10,40815,27691,30000 
-15,53890,36691,45000 +15,52490,36691,45000 
-20,66065,45691,60000 +20,64165,45691,60000 
-25,78240,54691,75000 +25,75840,54691,75000 
-,,, +
-When is heat pump overall cheaper?,never,after yr 8,+
  
  
heatpump_research.1660934283.txt.gz · Last modified: by Steve Isenberg