❄️ XLTH Cold-Climate Specialists
⭐ 5.0 Google Rating
💰 Xcel Rebate $2,250/Ton
Fujitsu Mini-Split & Heat Pump Installation in Denver, Colorado
Authorized Fujitsu Airstage dealer serving Denver & the Front Range. Every Fujitsu model installed — from the flagship Orion XLTH+ to the budget Altair 300, multi-zone XLTH systems, ducted air handlers, and commercial J & V-Series. R32 refrigerant. Cold-climate rated to –15°F.
Why We Recommend Fujitsu
Fujitsu General has earned the reputation as the “single-zone king” — their one-to-one systems consistently offer the highest efficiency ratings in the industry. The new Airstage R32 lineup with XLTH cold-climate technology makes them a top choice for Colorado.
XLTH Extra Low Temp Heating
Fujitsu’s XLTH technology heats continuously down to –15°F — lower than any competitor’s single-zone system. The outdoor units include a base pan heater to prevent condensate from freezing, a large heat exchanger, and a high-capacity compressor designed specifically for sub-zero operation.
Highest Single-Zone Efficiency
The Orion XLTH 9K achieves 33.1 SEER2 — one of the highest efficiency ratings of any residential mini-split. Fujitsu consistently tops efficiency charts in the smaller single-zone category, translating to the lowest energy bills for individual room heating and cooling.
R32 Refrigerant
Fujitsu’s Airstage lineup uses R32 refrigerant with 68% lower global warming potential than R410A. R32 is a single-component refrigerant offering better heat transfer efficiency — meaning lower energy bills and easier recycling at end of life.
Up to 12-Year Warranty
10-year parts and compressor warranty with standard registration. Fujitsu Elite contractor installations earn an industry-best 12-year parts and compressor warranty. We handle all registration at no extra charge.
Whisper-Quiet Operation
Indoor noise levels as low as 19 dB — quieter than a library whisper. Fujitsu’s advanced fan blade design and inverter compressor technology keep both indoor and outdoor units remarkably quiet during operation.
ESP Energy Saving Program
Fujitsu’s ESP occupancy sensor detects when you leave the room and automatically adjusts temperature to save energy. When you return, it resumes your previous settings — saving energy without you thinking about it.
Fujitsu Single-Zone Wall-Mount Mini-Splits
One outdoor unit powers one indoor unit. Fujitsu’s single-zone systems are widely considered the best in the industry for individual room heating and cooling. All new models use R32 refrigerant.
XLTH COLD-CLIMATE
R32
NEWEST
Orion XLTH+ (Orion XLTH)
KZAH1 Series · Airstage R32
Fujitsu’s flagship cold-climate mini-split and the most efficient XLTH system ever made. The Orion XLTH+ heats continuously down to –15°F while achieving up to 33.1 SEER2 — the highest efficiency of any cold-climate mini-split on the market. ProCore high-corrosion-resistant copper coils, ESP occupancy sensor, and whisper-quiet operation make this the ultimate single-zone system for Colorado.
- XLTH: heats continuously to –15°F
- Up to 33.1 SEER2 / 13.3 HSPF2 (9K model)
- R32 low-GWP refrigerant
- ProCore copper coils — superior corrosion resistance
- ESP occupancy sensor saves energy automatically
- Base pan heater prevents condensate freezing
- Compatible with FGLair WiFi app
- 12-year warranty with Elite contractor installation
BUILT-IN WiFi
PROVEN CLASSIC
Halcyon XLTH (LZAS Series)
LZAS1 / LZAH1 Series · R410A
Fujitsu’s proven high-efficiency XLTH platform — the system that earned Fujitsu the “single-zone king” title. Built-in WiFi on LZAS models, ESP occupancy sensor, and XLTH cold-climate heating to –15°F. Uses R410A refrigerant. Still available while supplies last, being replaced by the Orion XLTH+ for new installations.
- XLTH: heats continuously to –15°F
- Built-in WiFi on LZAS models
- ESP Energy Saving occupancy sensor
- Weekly programmable timer (28 events)
- Large heat exchanger for cold-climate performance
- R410A refrigerant (legacy model)
PERFORMANCE
Altair 500
KPAS1 Series · Airstage R32
Fujitsu’s mid-tier performance wall mount with R32 refrigerant. Heats to 5°F with solid efficiency ratings. A good balance of features and price for Colorado homeowners who don’t need the extreme low-temperature capability of the XLTH series but want reliable R32 performance.
- R32 low-GWP refrigerant
- Heats to 5°F outdoor temperature
- Ion deodorizing & apple catechin filters
- Auto-restart after power outage
- Compatible with FGLair WiFi adapter
- 12-year warranty with Elite contractor
BEST VALUE
Altair 300
KNAS1 Series · Airstage R32
Fujitsu’s most affordable R32 mini-split. The Altair 300 delivers solid inverter performance at the lowest price point in the Airstage lineup. Available in both 115V and 230V — the 115V option runs on a standard household outlet with no electrician needed. Ideal for bedrooms, guest rooms, and supplemental heating.
- Most affordable Fujitsu system
- 115V option — standard outlet, no electrician
- R32 low-GWP refrigerant
- Inverter-driven compressor
- Ion deodorizing filter
- 12-year warranty with Elite contractor
Specialty Indoor Unit Form Factors
Beyond wall mounts — Fujitsu offers floor consoles, compact cassettes, and slim duct units for spaces where wall mounting isn’t possible.
Floor Console
AGTV / RLFC Series
Sits at floor level like a baseboard heater. Perfect for rooms with large windows, low ceilings, or where wall mounting isn’t possible. Available with XLTH cold-climate outdoor units.
Compact Cassette
AUXB Series
Recessed into the ceiling with a compact decorative grille. 4-way airflow for even distribution. Ideal for open-plan living rooms, offices, and commercial spaces with drop ceilings.
Slim Duct
ARXB / ARUB Series
Concealed in the ceiling with short duct runs to supply registers. Completely hidden from view. Available with XLTH outdoor units for cold-climate installations where aesthetics are paramount.
Fujitsu Multi-Zone Systems
One outdoor unit powers 2–5 indoor units — each with independent temperature control. Mix and match wall mounts, floor consoles, cassettes, and slim duct units on a single condenser.
R32
Airstage XLTH Multi-Zone
AOU-RLXFZH Series · R32
Fujitsu’s cold-climate multi-zone condenser with R32 refrigerant and XLTH technology. Designed for Colorado’s sub-zero winters with continuous heating to –15°F. Connect 2–5 indoor units with individual zone control. Mix wall mounts, floor consoles, compact cassettes, and slim duct units.
- XLTH: heats continuously to –15°F
- R32 low-GWP refrigerant
- Individual zone temperature control
- Mix wall, floor, cassette, slim duct units
- Base pan heater for sub-zero operation
- Up to 130% connection ratio for design flexibility
- Compatible with FGLair app per zone
- 2-zone (18K), 3-zone (24K–36K), 4-zone (36K–45K), 5-zone (48K)
Airstage Standard Multi-Zone
AOU-RLXFZ Series · R32
Fujitsu’s standard multi-zone platform with R32 refrigerant. For milder locations or applications where extreme cold-climate performance isn’t required. Solid efficiency and individual zone control at a lower price than the XLTH variant.
Fujitsu Ducted & Air Handler Systems
For homes with existing ductwork or installations requiring concealed units. Fujitsu offers multi-position air handlers that connect to your existing duct system.
XLTH AVAILABLE
R32
Airstage Multi-Position Air Handler
AMUG-LMAS Series
Fujitsu’s ducted air handler for whole-home heating and cooling through existing ductwork. Replaces your conventional furnace and AC with a single all-electric heat pump system. Available in vertical and horizontal configurations. Pairs with XLTH outdoor units for cold-climate performance to –15°F.
- Replaces furnace using existing ductwork
- Vertical or horizontal installation
- Pairs with XLTH outdoor units for sub-zero heat
- R32 refrigerant for new installations
- Multiple static pressure settings
- Compatible with FGLair WiFi control
Fujitsu Commercial & Light Commercial Systems
For offices, restaurants, retail, multi-family, and larger residential applications.
J-Series VRF
Light Commercial VRF
Fujitsu’s light commercial VRF platform for offices, retail, and multi-family buildings. Modular outdoor units with multiple indoor unit options. Individual zone control for maximum comfort and efficiency.
V-Series VRF
Medium Commercial VRF
Larger capacity VRF for medium-sized commercial buildings. Simultaneous heating and cooling with heat recovery between zones. BACnet integration for building management systems.
R32 Multi-Zone (KWAH)
Commercial Multi-Zone
Fujitsu’s R32 multi-zone heat pumps for commercial applications. Higher capacity condensers with R32 refrigerant for offices, restaurants, and multi-tenant spaces.
Complete Fujitsu Model Comparison
Side-by-side specs for every Fujitsu single-zone wall-mount model we install.
| Model | Type | SEER2 | HSPF2 | Min Temp | Refrigerant | WiFi | BTU Range | Noise (dB) |
|---|---|---|---|---|---|---|---|---|
| Orion XLTH+ | FLAGSHIP | 24–33.1 | 11.9–13.3 | –15°F | R32 | Adapter | 9K–24K | 19–30 |
| Halcyon XLTH | HIGH-EFF | 25–33.1 | 13.3–14.2 | –15°F | R410A | Built-in* | 9K–24K | 19–30 |
| Altair 500 | PERFORMANCE | 22 | 10.5 | 5°F | R32 | Adapter | 9K–24K | 22–30 |
| Altair 300 | VALUE | 17 | 9.0 | 5°F | R32 | Adapter | 9K–24K | 24–35 |
| Floor Console | FLOOR | 19.5 | 10.0 | –15°F* | R32 | Adapter | 9K–15K | 25–35 |
| Compact Cassette | CEILING | 18 | 9.0 | 5°F | R32 | Adapter | 9K–18K | 28–42 |
| Slim Duct | CONCEALED | 17 | 9.0 | –15°F* | R32 | Adapter | 9K–24K | 28–38 |
* With XLTH outdoor unit pairing. LZAS model has built-in WiFi; LZBS requires adapter.
Colorado Rebates for Fujitsu Heat Pumps
Fujitsu XLTH cold-climate models qualify for the highest available rebates. We handle all paperwork and apply rebates as up-front discounts.
💰 Xcel Energy — $2,250/Ton
Cold-climate Fujitsu XLTH models (Orion XLTH+, Halcyon XLTH, multi-zone XLTH) qualify for Xcel’s highest rebate tier at $2,250 per ton. A typical 3-ton system earns $6,750 in Xcel rebates alone. Standard models qualify at $900/ton.
🏛️ Colorado State — $1,000 Credit
All ENERGY STAR certified Fujitsu heat pumps qualify for the $1,000 Colorado state heat pump tax credit. Applied as a discount at installation through registered contractors like us.
📋 HEAR — Up to $8,000
Income-qualified households (under 150% AMI) may receive up to $8,000 through Colorado’s Home Electrification & Appliance Rebate program. Stackable with Xcel and state credits.
⚡ Panel Upgrade — $1,500
If your installation requires an electrical panel upgrade, Xcel offers up to $1,500 for the panel work. Learn more →
Xcel cold-climate rebate: $6,750 + Colorado state credit: $1,000 = $7,750 in rebates applied up front. Income-qualified households may receive an additional $8,000 through HEAR, bringing total savings to $15,750.
Which Fujitsu System Is Right for You?
🏠 Single Room, Maximum Efficiency
→ Orion XLTH+ 9K–24K
Best for: Primary bedroom, home office, living room. Highest single-zone efficiency on the market, XLTH cold-climate rated to –15°F. Maximum rebate eligibility.
💪 Cold-Climate Primary Heating
→ Orion XLTH+ 12K–24K
Best for: Any room needing reliable primary heat. –15°F operation means it works on the coldest Colorado nights without backup.
💰 Budget-Conscious
→ Altair 300 9K–24K
Best for: Guest rooms, rental units, supplemental heat. 115V option for easy installation. R32 refrigerant at the lowest Fujitsu price point.
🏢 Multi-Room Zoning
→ Airstage XLTH Multi-Zone
Best for: Whole-home ductless, multi-room additions. 2–5 zones with cold-climate performance. Mix indoor unit types on one condenser.
🔄 Existing Ductwork Replacement
→ Airstage Air Handler
Best for: Replacing a gas furnace + AC with a single heat pump. Uses your existing ducts. XLTH outdoor unit for cold-climate performance.
👀 Hidden Installation
→ Slim Duct 9K–24K
Best for: Retrofits where the indoor unit must be invisible. Concealed in the ceiling with supply registers. Great for renovations.
🏔️ Garage or Workshop
→ Orion XLTH+ 12K–24K
Best for: Uninsulated or partially insulated garages. –15°F operation handles the worst Colorado garage temperatures.
🏬 Commercial / Multi-Family
→ J-Series or V-Series VRF
Best for: Office buildings, restaurants, retail, apartments. Learn more →
Fujitsu’s R32 Refrigerant Advantage
Fujitsu’s Airstage lineup uses R32 — the same proven refrigerant technology used globally.
🌍 68% Lower GWP
R32 has a Global Warming Potential of 675 — compared to 2,088 for R410A. That’s a 68% reduction in climate impact per unit of refrigerant.
⚡ Better Heat Transfer
R32 is a single-component refrigerant with superior thermodynamic properties, delivering 15–20% better heat transfer efficiency compared to R410A blends.
♻️ Easier to Recycle
As a single-component refrigerant (not a blend like R410A or R454B), R32 is significantly easier and cheaper to recover, recycle, and reuse at end of life.
Orion XLTH+, Altair 500, Altair 300, all Airstage multi-zone condensers, and the AMUG air handler use R32. The Halcyon LZAS/LZAH series still uses R410A and is being phased out. We recommend R32 models for all new installations.
Fujitsu FAQs
Common questions about Fujitsu mini-splits and heat pumps in Denver.