Thanks tigerdune and mike_home for your previous help w/load calc questions.
I am getting very different recommendations from 4 vendors on my single story 1928 brick bungalow located in the Upstate of SC. It is 1200 sq ft, old windows with storms (except none in sunroom), R-30 insulation in attic only, partial basement with sump pump. For a heat pump the electric service would need to be upgraded to 200 amps, cost $800 w/new meter. I keep vent shut off to sunroom due to lack of air tightness. I will hopefully sell this house within a couple of years.
The existing system is a 3 ton Carrier PROPANE Gas Pack (outside unit) with a bad compressor that is 12 years old. Apparently Carrier no longer makes replacement parts using the old antifreeze. The ductwork is primarily metal (except to sunroom), has R-4 insulation and was originally installed for a furnace, then modified poorly for the gas pack.
Here are the load calculations I figured on loadcalc.net:
Total Btu's Cooling: 29,796
Total Btu's Heating: 29,093 at 35 deg. outdoor temp
41,329 at 22 deg. outdoor temp
Sensible Load: 28,689
Latent Load 1,107
ESTIMATES:
VENDOR #1: Recommends a hybrid system, tying into old ductwork:
Carrier 25HCD336 (Heat Pump)
Carrier CNPHP36
Carrier 59SC2A080 (Furnace)
Btu/Seer: 3 ton 13 Seer
Programmable Thermostat
Total $6,159
Goodman GSZ13036 (Heat Pump)
Goodman CHPF36
Goodman GKS9090 (Furnace)
Btu/Seer: 3 ton 13 Seer
Programmable Thermostat
Total $5488
Locate Furnace in Basement, heat pump outdoors. Add supply to kitchen. New Pad, Drain, New Copper Line set, Reconnect ductwork, Reconnect fuel piping, PVC flue Reconnect control wiring, Install new power wiring, Get Mechanical/Electrical Permits. Remove existing system. Check new system. Fact. Authorized Startup.
VENDOR #2: Recommends a split system with all new ductwork (says it's leaky and inefficiently designed). However $7200 is just out of my budget and won't recoup costs so alternately quoted on heat pump in basement closer to/better to tie into existing ductwork:
Lennox 2 1/2 ton Heat Pump Model#13HPX-030 13 Seer
Lennox 2 1/2 ton Blower Coil Model CBX25UH-030
Digital manual change-over thermostat
10KW electric heater
Interconnecting refrigerant tubing
All materials to tie into existing ductwork
Electric to be done by others ($800)
Drain for removal of condensation
Patch hole in foundation with pressure treated plywood
One year Warranty on labor from Company
Limited Ten year Warranty on parts and limited Ten year on compressor from Manufacturer
$4,175
Options: Replace ductwork ADD to price, $1,525
For Tempstar Heat Pump, same price as Lennox
For Carrier Heat Pump, ADD $500
For 93% gas furnace and 2 1/2 ton A/C tied into existing ductwork, ADD $1,500
VENDOR #3: Recommends a split system, tying into old ductwork. Says that extended warranty of $350 for 10yrs is transferrable to new owner...REALLY??
Amana AMH950703B & CAPF3031B
95% AFUE 13 Seer Btu's Cooling: 30,000 Btu's Heating: 70,000
Non Programmable Digital Thermostat
Remove existing equipment. Install new equipment pad and vibration isolation pads, all new lines, vent/cap, drain sets, low voltage wire, tie back into existing ductwork and seal. Charge to mfg.'s specs
$4,583
VENDOR #4: Recommends replacing with a gas pack to best recoup costs, tying into old ductwork:
American Standard Model #4YCC3036 Silver SI
10 year Parts, 2 year labor
Remove old gas pack only, Install 3 ton 13 seer R-410A gas pack, Install 1 supply vent in kitchen, Install booster fan for sunroom, Minor ductwork repair. Electrical, gas piping and all material as needed. New digital thermostat.
$4,500
I have used both Vendors #1 & #2 and are both certified, reliable, prompt and professional. Vendor #3 comes recommended, listed by Amana as dealer but not certified & #4 is a neighbor's sons company that is a certified dealer.
Thanks in advance for your help. Let me know if you need more details.
tigerdunes
elaineycabaneyOriginal Author
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elaineycabaneyOriginal Author
tigerdunes