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heatpump_research

This page last changed 2022.08.19 14:54 visits: 1 time today, 0 time yesterday, and 54 total times

Heatpump Model and Installer Research

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.

Heat pump installers

CommenterCompanyContact infoComments
AS MS WRNETR Heating and Cooling Systems (Woburn)https://www.netrinc.com/ 781-933-6387 Good tech service & knowledgeable technicians
MM NAMuirfield Electric (Ayer)https://muirfieldmechanical.com/ 978-263-7130did what they said they'd do, on schedule, middle-of-road price, no extra fuss
RK128 Heating and Plumbing (Wakefield)https://www.128plumbing.com/ 781-670-3261(annoying website, can't get rid of stuff covering info)
AWCentral Cooling and Heating (Woburn)https://centralcooling.com/ 800-236-8725they did rebate paperwork, good company.
RR CL JLTotal Comfort (Burlington)https://www.totalcomfortmech.com/lexington 781-999-1275, 781-697-9016Good consultation, communication. helped w/MassSave
JL MANetZero Heating and Air Conditioning (Billerica)https://netzerohvac.net/ 888-306-3893
WTNew England Ductless (Boston)https://www.newenglandductless.com/ 781-995-2665Did 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

Heat pump devices

Mitsubishihigh demand, long lead times (8+ months?)
Bosch
Daikin
LGOne 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
SamsungSold/installed by Homeworks
GreeSold/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

Homeworks
Whole house
Tetra
Whole house
Oil heat only
Whole house
Condensers20k & 20k24k & 24k
Heads7k, 12k9k, 12k
7k, 7k, 9k9k, 9k, 9k
ManufacturerSamsungGree
Works to temp-22F
Manual J?Yes, no cost
Wifi to heads?Yes
Service?1st yr included then pay1st yr included, then thru installerannual cleaning
FYI, Heat loan: 7 yrs no int, monthly:214.29115.37
'===TOTAL COST CALCULATION===
Eqpt & installation28000196910
whole house rebate10000100000
EQUIPMENT & INSTALL cost1800096910
heatpump MAINTENANCE/yr after 1st yr5350
oil boiler MAINTENANCE/yr200200200
electric svc incremement $/mo (est)100100
gallons oil/year (est)100100700
oil cost/gal (est)444
ENERGY COST/yr160016002800
TOTAL COST END OF YEAR
119800114913000
222135132916000
5291401869115000
6314752049118000
7338102229121000
8361452409124000
9384802589127000
10408152769130000
15524903669145000
20641654569160000
25758405469175000

IF YOU HAVE COMMENTS on this, please let us know! Send to: both@toku.us and THANK YOU for your input.

heatpump_research.txt · Last modified: 2022.08.19 14:54 by Steve Isenberg