ORTECH heat pumps: how do their ratings compare?

A typical ORTECH heat pump beats 58% of similar heat pumps (same size and type), which is above average. ORTECH has 24 heat pump models in this list.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated Oct 11, 2026

Overall score

58%

of similar heat pumps beaten by its typical model

Above average

ORTECH has no QMID (the manufacturer ID the 25C tax credit needs) on file, so it is not ranked against other brands. Based on 24 models with every rating.

ORTECH, rating by ratingStrongest on heating power kept at 5°f (beats 69%), weakest on hot-day cooling efficiency (beats 42%).

Efficiency on a 5°F dayCOP at 5°FBeats 53%
Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 69%
Winter-long heating efficiencyHSPF2Beats 65%
Summer-long cooling efficiencySEER2Beats 67%
Hot-day cooling efficiencyEER2Beats 42%

Average (50%)

Each bar: the share of similar heat pumps a typical model beats on that rating.

Want ORTECH’s ranks and its models inside every size class? Switch to Advanced

Rebate standards

Share of this brand’s models that meet the efficiency levels rebate programs use. Programs can have other rules too.

83%
meet CEE 2025 Tier 1, the level many utility rebates use.
20 models. All brands: 57%.
See them
79%
meet Xcel Energy Colorado’s cold-climate rebate levels.
19 models. All brands: 53%.
See them
4%
reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.
1 model. All brands: 3%.
See them

Top ORTECH cold-climate picks, by size

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

Showing Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

5 of ORTECH’s 5 models of this size and type qualify.

1OAH-MZ18K-208-CH-OORTECH1.5 tons · 18,000 Btu/h · DuctlessKeeps 121% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
121% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
2.00 (COP at 5°F)
Good
Seasonal efficiency
11.0 (HSPF2)
Great
82.7score / 100
2OAH-MZ18K-208-PR-OORTECH1.5 tons · 17,700 Btu/h · DuctlessKeeps 81% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
81% (Capacity at 5°F vs 47°F)
Good
Efficiency at 5°F
2.00 (COP at 5°F)
Good
Seasonal efficiency
10.0 (HSPF2)
Good
64.5score / 100
3OAH-SZ18K-208-PR-Owith ductless indoor unit OAH-SZ18K-208-PR-HORTECH1.5 tons · 18,000 Btu/h · DuctlessKeeps 75% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
75% (Capacity at 5°F vs 47°F)
Below the middle
Efficiency at 5°F
2.20 (COP at 5°F)
Great
Seasonal efficiency
9.5 (HSPF2)
Below the middle
59.7score / 100
4OAH-SZ12K-115-PR-Owith ductless indoor unit OAH-SZ12K-115-PR-HORTECH1 ton · 12,000 Btu/h · DuctlessKeeps 75% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
75% (Capacity at 5°F vs 47°F)
Below the middle
Efficiency at 5°F
2.10 (COP at 5°F)
Great
Seasonal efficiency
9.5 (HSPF2)
Below the middle
56.4score / 100
5OAH-SZ12K-208-PR-Owith ductless indoor unit OAH-SZ12K-208-PR-HORTECH1 ton · 12,000 Btu/h · DuctlessKeeps 74% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
74% (Capacity at 5°F vs 47°F)
Below the middle
Efficiency at 5°F
2.00 (COP at 5°F)
Good
Seasonal efficiency
9.5 (HSPF2)
Below the middle
50.9score / 100

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

What to do next

The advanced view has ORTECH’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

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