Operating Guide

17 West Street | West Hatfield, MA 01088 | Toll Free 800.582.2213 | Phone [phone] | Fax [phone] | [e-mail] | www.aptankless.com
DHE MODEL
12 / Pro 12
15 / Pro 15
1 Bath
2 Baths
3 Baths
4 Baths
29 / Pro 2920 / Pro 20
Install 2
24 / Pro 24
Install 2
NUMBER OF BATHROOMS WITH
SHOWER IN HOUSE / CONDO
36 / Pro 36
Call Aqua Power® at 800.582.2213 if you have any sizing questions, or if you have high ow showers, or another
out-of-the-ordinary situation. Aqua Power® service representatives can make recommendations on sizing, or
provide assistance with our water heaters, to both homeowners and professional installers.
DHE Sizing Guide Whole House Tankless Electric Water Heater
Recommendations for 240 V units are correct if installed with 240 V service.
Increase one model size if unit will be installed with 208 V service.
FL
Cool (Northern) Climate
Inlet water
45°F - 55°F
Cool (Northern) Climate
Inlet water
45°F - 55°F
Warm (Southern) Climate
Inlet water
55°F - 70°F
HI
AK
MB
ON
QC
PE
NS
NH
VT
MA
CT
RI
NJ
DE
MD
NB
ME
NY
PA
WV
VA
NC
KY
TN
SC
GA
MS
AL
MO
AR
LA
TX
FL
OH
IN
IL
ID
OR
WA
NV
MT
WY
UT
AZ
CA
NM
CO
IA
MN
ND
SD
NE
KS
OK
MI
WI
AB
SK
BC


DRAWS 120 A
Requires minimum
200 A electric service
DRAWS 150 A
Requires minimum
300 A electric service
DRAWS 100 A
Requires minimum
200 A electric service
DRAWS 80 A
Requires minimum
125 A electric service
DRAWS 60 A
Requires minimum
100 A electric service
DRAWS 50 A
Requires minimum
100 A electric service