Carrier · Performance 96 single-stage (59SP6B) · Model
Carrier Performance 96 single-stage 59SP6B 080V21–20
The 59SP6B 080V21–20 is the 80,000 BTU/h, 21-inch-wide single-stage Performance 96: 78,000 BTU/h output at one gas rate, 97.0% AFUE upflow, with a 1 HP variable-speed ECM blower. It serves larger detached houses whose heat-loss calculation supports the capacity.
Rating plate
- Model
- 59SP6B 080V21–20
- Input
- undefined – 80,000 BTU/h
- Output
- undefined – 78,000 BTU/h
- AFUE
- 97% upflow · 95% down/horiz
- Burner
- Single-stage
- Blower
- ECM, constant torque (variable-speed)
- Fuel
- Natural gas / Propane
- Cabinet
- 35 × 21 × 29.5 in
- Canada
- Available in Canada
At 80,000 BTU/h input, the single-stage Performance 96 is a full-fire machine: 78,000 BTU/h out on every call until the thermostat is satisfied. Carrier certifies 97.0% AFUE upflow and 95% downflow and horizontal for this size, tying the family's best upflow figure.
The 21-inch cabinet and 1 HP variable 25-speed ECM blower reach 2,110 CFM for cooling, which is why this width is chosen when a 4- to 5-ton air conditioner or heat pump shares the ductwork. The 17.5-inch sibling (080V17–16) delivers the same 78,000 BTU/h with a 3/4 HP blower at the same 97.0% upflow.
For houses that spend most of the heating season needing far less than full fire, the two-stage Performance 96 at the same capacity runs gentler, low-fire cycles; the single-stage version trades that comfort for a lower first cost. The comparison belongs in the proposal, and the size itself belongs to the heat-loss calculation.
Specifications
From Carrier's published product data. Input and output are listed separately; AFUE depends on installation position.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input | 80,000 BTU/h | |
| Output | ||
| Output capacity | 78,000 BTU/h | Carrier product data; DOE test procedure, position dependent. |
| Efficiency | ||
| AFUE, upflow | 97 % | |
| AFUE, downflow / horizontal | 95 % | |
| Airflow | ||
| Airflow, heating @ rated ESP | 1,315 CFM | |
| Cooling airflow range | 270 – 2110 CFM | |
| Cooling capacity match | 5 tons @ 400 CFM/ton; 5.5 tons @ 350 CFM/ton | |
| Blower motor | Variable 25-speed, constant-torque (VCT) ECM | Not a constant-airflow motor; it does not report airflow to the control. |
| Certified temperature rise range | 40 – 70 °F (22 – 39 °C) | |
| Physical | ||
| Cabinet width | 21 in | 533 mm |
| Shipping weight | 161 lb | 73.0 kg |
| Cabinet height | 35 in | 889 mm |
| Cabinet depth | 29.5 in | 750 mm |
| Installation positions | Upflow, downflow, horizontal left, horizontal right | |
| Venting | ||
| Venting | Direct vent (2-pipe), single-pipe, or ventilated combustion air | Maximum equivalent vent length depends on size, pipe diameter and altitude; see installation instructions. |
| Electrical | ||
| Blower motor | 1 HP | |
| Maximum unit amps | 13.1 A | |
| Maximum fuse / breaker | 20 A | |
| Electrical supply | 115 V, 60 Hz, 1 phase (104 – 127 V) | |
| Controls | ||
| Burner staging | Single-stage (full fire on every call) | |
| Other | ||
| Burners | 4 | |
| Inducer | Single-speed | |
| Fuel | Natural gas; propane with gas conversion accessory kit | |
Variants
Sizes that share this model page. A variant gets its own page only when it has substantial independent value.
| Size | Input high | Input low | Output high | Output low | AFUE upflow | AFUE down/horiz | Width (in) | Ship wt (lb) | Cooling CFM | Motor HP |
|---|---|---|---|---|---|---|---|---|---|---|
| 080V21–20 | 80,000 | — | 78,000 | — | 97 | 95 | 21 | 161 | 270 – 2110 | 1 |
| 080V17–16 | 80,000 | — | 78,000 | — | 97 | 95 | 17.5 | 151 | 255 – 1625 | 3/4 |
Filters, serial numbers and service parts
Filter
- Field-supplied filter; certified watt data uses Carrier media filter 325531-40
Components this family's service documentation covers
- Hot-surface ignitor
- Flame sensor
- Pressure switches
- Inducer motor
- Condensate trap and drain components
- ECM blower motor
- Control board
Service-parts list source: Components documented for service in 59SP6B-01SI REV B.
Warranty coverage, registered or not
- Registered
- 10-year parts and lifetime limited heat exchanger warranty
- Not registered
- Default 5-year parts and 20-year heat exchanger limited warranty
As published by the manufacturer. Source. Conditions and exceptions are in the warranty certificate.
Fault codes this model can show
Best for
- Larger detached homes whose heat-loss calculation supports 78,000 BTU/h of output
- Houses with a 4- to 5-ton air conditioner or heat pump on shared ductwork
- Budget-conscious replacements where full-fire cycles are acceptable
Compatible controls
- Standard 24 V thermostat terminals: G, C, W, Y/Y2, Y1, R, DHUM
- ecobee for Carrier smart thermostat with InteliSense technology (InteliSense capable)
- On-board 3-digit LCD control display with ComfortFan continuous-fan control
System integrations
- Air conditioner or heat pump (dual-fuel / Hybrid Heat) with a compatible thermostat
- Twinning of two furnaces with the accessory kit
- Field-supplied filter or optional media filter cabinet
Warranty, as published
Default 5-year parts limited warranty and 20-year heat exchanger limited warranty; 10-year parts and lifetime limited heat exchanger warranty with timely registration.
Register within 90 days of original installation, except in jurisdictions where warranty benefits cannot be conditioned on registration. Original purchaser/homeowner only; see the warranty certificate. Source
BC Wide can help with registration and warranty enquiries for furnaces it installs or services. Ask about warranty support.
Manuals, codes and service
Documents
Fault codes that apply
- Code 23: pressure switch stuck closed
- Code 24: fuse fault
- Code 25: control program and configuration faults
- Code 27: super plug or control program fault
- Code 31: secondary pressure switch open or lockout
- Code 32: open main pressure switch (LPS)
- Code 33: a switch has opened in the main limit circuit
- Code 34: ignition fault or flame loss
- Code 45: control failure
- Code 46: momentary loss of power
- Code 10: rapid flash - L1 polarity fault
- Code 12: W on at power up
- Code 13: limit lockout or ignition lockout
- Code 14: flame-loss lockouts during a heat request
- Code 21: 24 VAC sensed on the gas valve when it shouldn't be
- Code 22: false flame
- Code 15: lockout - no blower rpms detected
- Code 19: InteliSense communications loss
- Code 41: blower RPM not detected
- Code 52: supply-air temperature sensor open or short
- Code 53: return-air temperature sensor open or short
BC Wide service
This catalogue page is reference information for anywhere in Canada. On-site service for this model is available across Greater Vancouver from BC Wide's Burnaby base — see furnace service in Burnaby and all service areas.
Questions people ask
Is 80,000 BTU/h input too big for a modern house?
For many modern houses, yes; for larger or older ones, no. The heat-loss calculation decides. Carrier's own product data warns that excessive oversizing can shorten furnace and vent life.
What is the difference between the 080V21–20 and the 080V17–16?
Same input and output and the same 97.0% upflow AFUE. The 080V21–20 has the wider 21-inch cabinet, a 1 HP blower with up to 2,110 CFM of cooling airflow, and a 20 A breaker; the 17.5-inch unit uses a 3/4 HP blower and 15 A.
Considering the 59SP6B 080V21–20?
Get a published ballpark range for a supply-and-install, then a consultation to confirm sizing from a heat-loss assessment. Equipment-only pricing is not offered on this site.