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Model specs

RTGH-95DVLN-3

Rheem / 9.5 GPM Condensing Tankless Water Heater
Endless hot water, but gas-line capacity and venting decide the install.
ShortlistRunning costInstall changeFull specs
UEF0.93Certified efficiency
Max flow9.5 GPMWhole-home demand signal
Footprint23" × 9"Height × depth
Running cost~$250/yrU.S. average natural gas
Estimated annual savings: $138 compared to a standard standard gas tank. Based on U.S. average energy prices. See all condensing tankless models

RTGH-95DVLN-3 operating cost

This unit saves roughly $138 every year compared to the standard gas tank it replaces
RTGH-95DVLN-3
$250/yr
Std tank (0.6 UEF)
$388/yr
~4.7year payback
At $138/yr in savings, the upfront premium pays for itself in about 4.7 years. Over 10 years: roughly $730 in net savings.
Your state changes the math. Annual cost ranges from ~$121/yr (ID) to ~$918/yr (HI).
U.S. avg natural gas: $1.36/therm (EIA, Dec 2025).
RTGH-95DVLN-3 in the condensing tankless class: #4 of 4 on efficiency.

Should this be on your shortlist?

Best for

highest flow rate

Not ideal for

lower efficiency than most class peers

  • Why it makes shortlists: handles the most simultaneous fixtures
Shortlist alternatives in condensing tankless:
Navien NPE-210S2UEF 0.96 · 5.3 GPMNavien NPE-240S2UEF 0.96 · 5.8 GPMTakagi T-H3J-OS-N-1UEF 0.95 · 4.7 GPM
Check price and availability: Rheem RTGH-95DVLN-3 on Amazon
The bill may work. Now check what actually changes on install day before you let the shortlist settle.

Switching to the RTGH-95DVLN-3

From a gas tank

✓
Uses existing gas line, but may need upsized gas supply for 199,900 BTU input.
▲
New venting required. Direct vent uses different venting than a standard tank.
▲
Condensate drain needed for condensing units.
✓
Wall-mounted. Frees floor space where your old tank stood.
Plumber handles most of the work. Gas line sizing is the key question.

From another tankless

✓
Same wall mount location. Same gas and water connections.
▲
Check venting compatibility. Vent diameter and termination may differ.
✓
Electrical outlet likely already in place.
Simplest path if venting and gas line sizing are compatible. Verify before ordering.

From an electric tank

▲
Gas line required. Major install if no existing gas supply.
▲
New venting required. Direct vent through exterior wall or roof.
✓
No more waiting for a tank to refill. Endless hot water on demand.
Biggest install scope. Needs plumber + possibly gas line work.
Gas line sizing and venting matter more than flow rate. The headline GPM only works if the gas supply and vent run support it.

RTGH-95DVLN-3 installation specifications

Dimensions

Height23 in
Width18 in
Depth9 in
Weight53 lbs
Connections3/4 inch NPT

Electrical

Voltage120V

Venting

MaterialCategory Iv Pvc Cpvc
CategoryIV

Common install considerations for gas tankless units

What is required depends on your existing installation, local code, and installer preference.

Condensate Neutralizer Kit Commonly required Check on Amazon (paid link)
Gas Flex Connector Commonly required Check on Amazon (paid link)
Venting Kit Commonly required Check on Amazon (paid link)
Full accessories list

Warranty

Coverage

Heat exchanger15 yr
Parts5 yr
Labor1 yr
Class rankings: condensing tankless water heaters

Rankings

Efficiency (UEF) higher is better
#4of 4Efficiency
1
Navien NPE-210S2
0.96
2
Navien NPE-240S2
0.96
3
Takagi T-H3J-OS-N-1
0.95
4
Rheem RTGH-95DVLN-3
0.93
Max Flow Rate higher is better
#1Class LeaderFlow Rate · 4 models tested
1
Rheem RTGH-95DVLN-3
9.5 GPM
2
Navien NPE-240S2
5.8 GPM
3
Navien NPE-210S2
5.3 GPM
4
Takagi T-H3J-OS-N-1
4.7 GPM

Common questions about the Rheem RTGH-95DVLN-3

From manufacturer specs, EIA energy data, and DOE regulations.

How much does the RTGH-95DVLN-3 cost to run per year?
~$250/yr at the U.S. average natural gas rate. That is roughly $138/yr less than a standard gas tank.
How many fixtures can the RTGH-95DVLN-3 run at once?
9.5 GPM maximum. At typical fixture flow rates (2 GPM shower, 1.5 GPM faucet), that handles 2 to 3 simultaneous fixtures.
Will the RTGH-95DVLN-3 fit in my space?
23" tall, 18" wide, 9" deep. Measure your space including clearances before ordering.
What gas connection does the RTGH-95DVLN-3 need?
199,900 BTU input. Verify your gas line can supply this flow rate. Most homes with existing gas water heaters have adequate supply.
What warranty does the RTGH-95DVLN-3 come with?
15-year heat exchanger warranty, 5-year parts.
Is the RTGH-95DVLN-3 ENERGY STAR certified?
Yes. ENERGY STAR certified condensing tankless. May qualify for utility rebates in your area.
Full specifications
Performance
UEF0.93
Max Flow Rate9.5 GPM
BTU Input199,900 BTU/hr
Est. Annual Energy184 therms/yr
Physical
Height23 in
Width18 in
Depth9 in
Weight53 lbs
Connections3/4 inch NPT
Electrical
Voltage120 V
Venting
MaterialCategory Iv Pvc Cpvc
Warranty
Heat Exchanger15 yr
Parts5 yr
Labor1 yr
Certifications
ENERGY STARCertified
Keep the route moving

Other Rheem models and the full condensing tankless guide, if this one isn't the right fit.

Head-to-head comparisons
Condensing Tankless guideAll Rheem modelsUpgrade paths for this modelSizing guideInstallation accessoriesAll models
Sources. Manufacturer, Retailer listing, Rheem. Data compiled March 2026.Methodology
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