Carrier Crossover Heat Pump – Supplied & Professionally Installed by 4Most Energy
- Inverter-driven variable-speed compressor
- High-heat operation down to -30°C
- Up to 18.0 SEER2 and 10.0 HSPF2
- Compact outdoor footprint for tight spaces
- Factory-installed basepan and crankcase heaters
- Built-in 24V thermostat interface
- Flexible air handler installation (upflow/downflow/right/left)
- Quiet operation as low as 54 dB(A)
Warranty: 10-year limited parts warranty and 10-year limited compressor warranty (registered). 5-year limited if not registered.
Choosing the right system is only half the equation — installation and system design determine real-world efficiency, comfort, and lifespan. At 4Most Energy, we specialize in Carrier crossover configurations that maximize performance in Ontario conditions.
**Ontario Air-Source Heat Pump Rebates **
- Up to $7,500 for electrically heated homes (cold-climate systems required)
- Up to $2,000 for natural gas heated homes ($500 per ton — 2 ton = $1,000, 3 ton = $1,500, 4 ton = $2,000 max)
- Up to $10,000 for oil-heated homes (income-qualified programs may cover full upgrade)
4Most Energy verifies eligibility and confirms the maximum rebate before installation.
Perfect Furnace Matching (Hybrid Upgrade):
We integrate the 38MURA with your existing gas furnace to create a dual-fuel hybrid system. This setup delivers high-efficiency electric cooling in summer and uses the heat pump as the primary heating source, automatically switching to gas only when required for extreme cold or rapid temperature recovery.
Carrier Hybrid System (Bundle & Save):
For optimized performance and pricing, we design a matched system using a Carrier Performance furnace and an Ecobee smart thermostat. This intelligent control strategy continuously evaluates outdoor temperature, demand, and efficiency, switching between heat pump and furnace to minimize operating cost while maintaining comfort.
Complete Decarbonization (All-Electric Option):
When paired with the Carrier 40MUAA air handler, this system can operate as a fully electric solution. This configuration eliminates natural gas usage for heating, supports electrification goals, and aligns with Ontario rebate pathways where applicable.
Carrier Heat Pump Specifications
| Size | Outdoor Model | SEER2 | HSPF2 | Cooling Capacity | Heating @ 17°F | Heating @ 5°F |
|---|---|---|---|---|---|---|
| 1.5 Ton | 38MURAQ18AB3 | 18.0 | 9.3 | 18,000 BTU/h | 13,000 BTU/h | 16,500 BTU/h |
| 2 Ton | 38MURAQ24AB3 | 17.4 | 10.0 | 24,000 BTU/h | 18,600 BTU/h | 22,700 BTU/h |
| 2.5 Ton | 38MURAQ30AB3 | 16.2 | 8.9 | 30,000 BTU/h | 20,400 BTU/h | 24,100 BTU/h |
| 3 Ton | 38MURAQ36AB3 | 15.8 | 9.5 | 36,000 BTU/h | 29,500 BTU/h | 34,500 BTU/h |
| 4 Ton | 38MURAQ48AB3 | 15.6 | 9.4 | 47,000 BTU/h | 35,000 BTU/h | 46,000 BTU/h |
| 5 Ton | 38MURAQ60AB3 | 15.0 | 9.0 | 55,000 BTU/h | 42,000 BTU/h | 50,000 BTU/h |
Use this quick sizing guide as a starting point for pairing the Carrier crossover heat pump with the best-matched furnace size. Final sizing should always be confirmed with a full heat loss calculation, duct evaluation, and home assessment.
Sizing Guide
| Home Size | Recommended Heat Pump Size | Best Matched Furnace Size |
|---|---|---|
| Up to 1,600 sq ft | 2 Ton | 40,000 or 60,000 BTU furnace |
| 1,600 to 2,200 sq ft | 2.5 Ton | 60,000 BTU furnace |
| 2,200 to 2,800 sq ft | 3 Ton | 60,000 or 80,000 BTU furnace |
| 2,800 to 3,800 sq ft | 4 Ton | 80,000 to 100,000 BTU furnace |
| 3,800 sq ft and up | 5 Ton | 100,000 or 120,000 BTU furnace |
Custom Installation Form Recommendation
- What is your home’s square footage and number of floors?
- What system are you replacing (AC, heat pump, furnace, or full system)?
- Do you have existing ductwork and has airflow been an issue?
- What electrical capacity is available at your panel?
- Are you looking for a rebate-qualified cold climate heat pump?
Request a professional system match and installation assessment from 4Most Energy.
Installation Process
- Home assessment and load calculation
- System selection and duct evaluation
- Electrical and refrigerant planning
- Installation of indoor and outdoor units
- Commissioning and performance testing
- Final walkthrough and optimization
Warranty Coverage
- 10-year limited parts warranty for the original owner when the product is properly registered within 90 days of original installation
- 5-year limited parts warranty if not registered within the required period
- 5-year limited parts warranty for subsequent owners in residential applications
- In non-residential or other applications, coverage is 7 years on parts for the original owner only
- Warranty applies only when the system is installed properly by a licensed HVAC technician, remains in its original installation location, and is maintained according to Carrier instructions
Important Warranty Notes
- Warranty coverage is primarily for defects in materials or workmanship under normal use and maintenance
- Labor, diagnostic, removal, shipping, refrigerant, and reinstallation costs are not covered
- Normal maintenance items such as filter cleaning/replacement, coil cleaning, and routine servicing are not covered under warranty
- Damage caused by faulty installation, misuse, improper servicing, electrical issues, floods, fire, lightning, corrosive environments, or unauthorized modifications is excluded
Recommended Maintenance
- Annual professional inspection of refrigerant charge, controls, blower operation, condensate drainage, and electrical connections
- Clean or replace air filters regularly based on system usage and household conditions
- Keep indoor and outdoor coils clean to maintain airflow and rated efficiency
- Check line set insulation, drain performance, and thermostat operation during seasonal service
- Maintain installation and service records to help support any future warranty claim
Frequently Asked Questions
I’m replacing my old air conditioner because it no longer works — is switching to a heat pump a good choice?
Yes — in many homes, replacing an old AC with a heat pump is one of the smartest upgrades you can make. You still get high-efficiency cooling in summer, but you also gain an efficient heating source for spring, fall, and much of the winter. In a crossover system, the heat pump can work with your existing or new furnace, giving you the benefit of electric heating during milder conditions and gas backup only when needed. That means better year-round value from the equipment you’re installing, instead of replacing your AC with another cooling-only system.
Is the Carrier 38MURA a good cold-climate heat pump for Ontario winters?
Yes. The Carrier 38MURA high-heat system is designed for cold-weather performance and can operate in heating mode down to -30°C. That makes it a strong option for homeowners in Toronto, the GTA, and across Ontario who want a cold-climate heat pump that can handle real winter conditions while reducing reliance on traditional heating sources.
Can the Carrier 38MURA be installed with my existing furnace?
Yes. One of the biggest advantages of this crossover system is that it can often be paired with an existing properly sized gas furnace to create a dual-fuel hybrid heating system. In this setup, the heat pump handles efficient daily heating and cooling, while the furnace supports the home during extreme cold, high-demand recovery, or when gas becomes the better heating source.
What size Carrier crossover heat pump do I need for my home?
The right size depends on more than square footage alone. Insulation levels, window area, ceiling height, duct design, orientation, and how much of the winter heating load you want the heat pump to carry all affect sizing. As a general starting point, homes up to 1,600 sq ft often align with a 2 ton system, while larger homes may require 2.5 ton, 3 ton, 4 ton, or 5 ton configurations. Final sizing should always be confirmed through a professional load calculation.
How efficient is the Carrier 38MURA heat pump?
Depending on the matched configuration, the 38MURA delivers up to 18.0 SEER2 and up to 10.0 HSPF2. In practical terms, that means high-efficiency cooling in summer and strong heating performance in winter, especially when the system is matched and commissioned properly for the home.
Is the Carrier 38MURA eligible for heat pump rebates in Ontario?
In many cases, yes. Rebate eligibility depends on your current heating source, the exact matched system, and the active rebate program at the time of installation. Electrically heated homes, natural gas heated homes, and oil-heated homes may all qualify under different program structures. 4Most Energy reviews the address, equipment match, and application requirements before installation to confirm the best available rebate path.
Is this a good heat pump for homes with limited outdoor space?
Yes. The 38MURA is a strong fit for properties where side-yard clearance and exterior space are limited. Its compact outdoor design makes it suitable for tighter residential layouts while still delivering the performance expected from a ducted cold-climate heat pump system.
Can I run this system as a fully electric heat pump without natural gas?
Yes. When paired with the proper indoor air handler, the Carrier crossover system can be installed as a fully electric solution. This is ideal for homeowners who want to reduce or eliminate natural gas use and move toward full electrification.
Does the Carrier 38MURA work with a smart thermostat?
Yes. The system includes a 24V interface, and the best hybrid-system performance is achieved when it is paired with an Ecobee smart thermostat. In a crossover setup, Ecobee helps manage heat pump-to-furnace changeover more intelligently, improving comfort control, system efficiency, and overall performance.
Service Area
Greater Toronto Area (GTA) and surrounding regions
Toronto, Markham, Richmond Hill, Vaughan, Aurora, Newmarket, Scarborough, Brampton, and Mississauga.
Extended Service Area: Stouffville, Oshawa, Barrie, Orangeville, Hamilton, St. Catharines, Guelph, Kitchener.
