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SpecPioneer Diamante Pro 18,000 BTU 230VSenville Aura 18,000 BTU 230V
PhotoPioneer Diamante Pro 18,000 BTU 230VSenville Aura 18,000 BTU 230V
Our scoreSCORE7.1 / 10SCORE7.5 / 10
Our takeA cheaper flare 18k for a garage if you can hire the startup: 12,500 BTU/h at 5°F, heating to -4°F. Not ENERGY STAR.Full rated output at 5°F, matching the Olympus E Star 18k value for value, and it cost less than the Amazon Olympus when we checked. Licensed install required.
Nominal size18,000 BTU18,000 BTU
Voltage230V230V
Rated heat at 47°F18,000 BTU/h18,000 BTU/h
Heat at 17°F13,000 BTU/h18,000 BTU/hbest
Heat at 5°F12,500 BTU/h18,000 BTU/hbest
Lowest heating temp-4°F-22°Fbest
Max heat at lowest temp9,600 BTU/hbest8,000 BTU/h
SEER22121.4best
HSPF2 (Region IV)9.511best
Install typeFlareFlare
Line set in box16 ftn/a
Max line run65 ft98.4 ftbest
Warranty covers owner installYesNo
Warranty, parts5 yr5 yr
Warranty, compressor5 yr10 yrbest
ENERGY STAR Cold ClimateNoYes
ENERGY STARNoYes
RefrigerantR-454BR-454B
Watch out forThe older R-410A Diamante Pro Series ends FI19RL (heats to -13°F, 19 SEER2 on the 12K 115V); confirm SI20RL or R-454B. The Diamante Essenza, Diamante Ultra and WYS are different lines with different specs. Registration deadline reads 90 days on the product page and one week after install in the warranty policy; satisfy both.The Amazon 18k listing gives 2 yr parts / 7 yr compressor; confirm the term for the model you receive. The Amazon Aura listings don't state refrigerant. The 12k listing (SENA-12HF-16) shows a 25.5 efficiency figure that matches the older R-410A Aura and a 2 yr parts / 7 yr compressor warranty field; confirm model and refrigerant before you pay. Current R-454B wall pairings are SENA-xxHF-OG + SENA-xxHF-IGG; older R-410A pairings end /OQ + /IQ. Senville's site lists higher HSPF2 and 47°F heat than the AHRI figures on NEEP; we use the certified numbers. Senville's FAQ says no to owner installs, and the warranty requires a licensed HVAC contractor.
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