Heat Pumps

Carrier Greenspeed Intelligence vs Lennox XP25

Q: Is the Carrier Greenspeed Intelligence or Lennox XP25 better?

The Carrier Greenspeed Intelligence scores 9/10 vs 8/10 in our rating. It excels at: homeowners who want premium comfort with precise temperature control. The Lennox XP25 is the better choice if: homeowners who want the highest seer2 efficiency rating. The right pick depends on your specific situation.

Q: How much does the Carrier Greenspeed Intelligence cost vs the Lennox XP25?

The Carrier Greenspeed Intelligence costs $6,000 - $20,000 installed. The Lennox XP25 costs $6,000 - $18,000 installed. Both prices include professional installation by NuWatt Energy. State incentives may reduce your net cost — use our calculator for exact pricing.

Q: Which has a better warranty?

The Carrier Greenspeed Intelligence has a 10-year warranty (10yr compressor / 10yr parts warranty). The Lennox XP25 has a 10-year warranty (10yr compressor / 5yr parts warranty). Both offer the same warranty length.

Q: Does NuWatt install both the Carrier Greenspeed Intelligence and Lennox XP25?

Yes. NuWatt Energy installs both products and our crew has hands-on experience with each. We can help you choose based on your home, energy goals, and budget during a free consultation.

Q: Can I switch from Carrier to Lennox later?

In most cases, yes. Electrical panel changes require a full panel swap by a licensed electrician. Contact NuWatt for a specific assessment of your system.

Side-by-side comparison based on specs, real pricing, and our crew's installation experience. Updated for 2026.

Marcus R.Senior Solar Engineer

NABCEP PV Installation Professional·Updated Feb 2026

Carrier

Lennox

Choose Carrier Greenspeed Intelligence if:

Homeowners who want premium comfort with precise temperature control
Cold-climate homes that need reliable heating to -15°F
Replacing high-end furnace/AC combos
Homes where noise is a major concern

$6,000 - $20,000 installed

Choose Lennox XP25 if:

Homeowners who want the highest SEER2 efficiency rating
Premium ducted installations with existing Lennox equipment
Homes where summer cooling efficiency matters as much as heating
Allergy-sensitive households (pairs with Lennox PureAir filtration)

$6,000 - $18,000 installed

Spec-by-Spec Comparison

Specification

Carrier Greenspeed Intelligence

Lennox XP25

Price

$6,000 - $20,000 installed

$6,000 - $18,000 installed

Warranty

10 years

HSPF2

13.0

10.2

SEER2

22.0

23.5

Min Operating Temp

-15°F (-26°C)

0°F (-18°C)

Noise Level

51 dB (outdoor)

54 dB (outdoor)

Size Range

24,000 - 60,000 BTU

Compressor Warranty

10 years

Refrigerant

R-410A

NuWatt Rating

9/10

8/10

Cold-Climate Performance

Heating capacity retention at progressively colder outdoor temperatures. Data from NEEP cold-climate heat pump database and NuWatt field measurements.

≥70% capacity

50-69% capacity

<50% capacity

N/A

Carrier

47°F

100%

17°F

92%

5°F

82%

-5°F

72%

-13°F

62%

-22°F

48%

State Heat Pump Rebates

Both the Carrier Greenspeed Intelligence and Lennox XP25 may qualify for these state rebate programs. Click your state for full eligibility details.

State	Program	Rebate Amount	Details
Massachusetts	Mass Save Whole-Home	Up to $8,500	$2,650/ton capped. $500 sizing + $500 weatherization bonuses. HEAT Loan 0% APR up to $25K.
Connecticut	Energize CT	$250-$1,000/ton	Standard $250/ton (max $2,500). Energy Optimization $1,000/ton (max $10K). Smart-E Loan 0.99% APR.
Rhode Island	Clean Heat RI	Up to $11,500	60% of cost (standard). 100% income-eligible (max $18K).
Maine	Efficiency Maine	$1,000-$3,000/unit	Standard $1K, moderate $2K, low-income $3K per unit. Max 3 units.
New Hampshire	NHSaves	$250-$1,250/ton	Standard $250/ton. Enhanced $1,250/ton (replacing electric resistance).
Vermont	Efficiency Vermont	$475-$2,200/unit	Ductless $475/head, ducted $2,200. GMP income bonus $2K. Cold-climate models only.
New Jersey	NJ Whole Home + Utility	Up to $7,500 + $1,400	Graduated rebate ($2K base + $200/point). Utility: PSE&G $900, ACE $1,300, RECO $1,400.
Pennsylvania	Act 129 Utility Rebates	$200-$1,700+	PECO $300 + EAP $500-1,400 stackable. PPL $350-450. FirstEnergy $500. Duquesne $200.
Texas	Utility Rebates	$100-$3,000	Austin Energy ~$3K (highest). Oncor $600. CPS $100-275/ton. CenterPoint ~$500. No statewide program.

Pros & Cons

Carrier Greenspeed Intelligence

Pros

+Greenspeed variable-speed compressor adjusts in 1% increments
+Operates down to -15°F with strong capacity retention
+Extremely quiet — among the lowest outdoor dB ratings
+Infinity System Control thermostat with humidity management
+Premium build quality with corrosion-resistant Silencer System II cabinet

Cons

-Highest price point — premium positioning
-Requires Carrier Infinity thermostat for full variable-speed features
-Limited ductless options — primarily a ducted system
-Dealer network smaller than Mitsubishi in New England

Lennox XP25

Pros

+Highest SEER2 rating in our lineup — exceptional cooling efficiency
+SilentComfort technology for ultra-quiet operation
+Integrates with Lennox iComfort S30 smart thermostat
+Variable-speed compressor with precise comfort control
+PureAir air filtration system compatibility

Cons

-Cold-climate performance not as strong as Mitsubishi or Fujitsu
-Premium pricing comparable to Carrier
-Lennox parts can be more expensive and harder to source
-Requires Lennox dealer for warranty service

Installation Notes from Our Crew

Carrier Greenspeed Intelligence

The Carrier Greenspeed is the Cadillac of ducted heat pumps. Our crews install the Infinity System Control alongside it for full variable-speed optimization. The outdoor unit is remarkably quiet — homeowners with close neighbors appreciate this. It takes 1-2 days for a full ducted install including thermostat setup and system commissioning.

Lennox XP25

The Lennox XP25 is a premium ducted system with the best cooling efficiency numbers. We install it primarily when homeowners are already in the Lennox ecosystem or when summer cooling efficiency is the top priority. The SilentComfort features make a noticeable difference in outdoor noise. For New England heating, it works well but we recommend heat strips below 0°F.

Frequently Asked Questions

Is the Carrier Greenspeed Intelligence or Lennox XP25 better?

The Carrier Greenspeed Intelligence scores 9/10 vs 8/10 in our rating. It excels at: homeowners who want premium comfort with precise temperature control. The Lennox XP25 is the better choice if: homeowners who want the highest seer2 efficiency rating. The right pick depends on your specific situation.

How much does the Carrier Greenspeed Intelligence cost vs the Lennox XP25?

The Carrier Greenspeed Intelligence costs $6,000 - $20,000 installed. The Lennox XP25 costs $6,000 - $18,000 installed. Both prices include professional installation by NuWatt Energy. State incentives may reduce your net cost — use our calculator for exact pricing.

Which has a better warranty?

The Carrier Greenspeed Intelligence has a 10-year warranty (10yr compressor / 10yr parts warranty). The Lennox XP25 has a 10-year warranty (10yr compressor / 5yr parts warranty). Both offer the same warranty length.

Does NuWatt install both the Carrier Greenspeed Intelligence and Lennox XP25?

Yes. NuWatt Energy installs both products and our crew has hands-on experience with each. We can help you choose based on your home, energy goals, and budget during a free consultation.

Can I switch from Carrier to Lennox later?

In most cases, yes. Electrical panel changes require a full panel swap by a licensed electrician. Contact NuWatt for a specific assessment of your system.

Update Location

Carrier Greenspeed Intelligence vs Lennox XP25

Choose Carrier Greenspeed Intelligence if:

Choose Lennox XP25 if:

Spec-by-Spec Comparison

Cold-Climate Performance

State Heat Pump Rebates

Pros & Cons

Carrier Greenspeed Intelligence

Pros

Cons

Lennox XP25

Pros

Cons

Installation Notes from Our Crew

Carrier Greenspeed Intelligence

Lennox XP25

Frequently Asked Questions

Related Comparisons

Not Sure Which to Choose?

Carrier Greenspeed Intelligence vs Lennox XP25

Choose Carrier Greenspeed Intelligence if:

Choose Lennox XP25 if:

Spec-by-Spec Comparison

Cold-Climate Performance

State Heat Pump Rebates

Pros & Cons

Carrier Greenspeed Intelligence

Pros

Cons

Lennox XP25

Pros

Cons

Installation Notes from Our Crew

Carrier Greenspeed Intelligence

Lennox XP25

Frequently Asked Questions

Related Comparisons

Not Sure Which to Choose?