Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater VENT ICE Error Fix: Vent Termination Icing in Cold Climates

In cold climates, moisture in the exhaust gases can cause ice to form at the vent termination point on the exterior wall. Ice buildup can partially or fully block the exhaust, triggering Code 10 (abnormal combustion) or Code 29 (blockage). Mitigation strategies: install a concentric (pipe-in-pipe) vent terminal designed to reduce freezing, position the vent termination in a sheltered location protected from prevailing winds, extend the vent termination with a snorkel-type extension to direct exhaust away from the wall, and manually clear ice buildup when observed. Some installations may benefit from an elbow directing the exhaust downward below the termination to prevent ice from sealing the opening.

warning2 fixes available✨ Free fix available

Quick Answer

Error VENT ICE on the Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater means: Vent Termination Icing in Cold Climates. The top-ranked community fix is “Install a Concentric Vent Terminal with Snorkel Extension” (medium difficulty, ~120 min, DIY cost: $50-$100). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · water heater

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many water heater repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $300-$450.

Other Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater Error Codes

False Flame Detection

2 fixes

Abnormal Combustion — Blocked Vent

2 fixes

Ignition Failure — No Flame Detected

2 fixes

Flame Failure — Flame Lost During Operation

2 fixes

Thermal Fuse Activated — Overheat Safety

2 fixes

Overheating — Outgoing Water Too Hot

2 fixes

Abnormal Temperature Rise — Low Water Flow

2 fixes

Condensate Drain / Vent Blockage

2 fixes

People Also Ask About Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater Error VENT ICE

What does error code VENT ICE mean on a Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater?

Error code VENT ICE on the Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater means: Vent Termination Icing in Cold Climates. In cold climates, moisture in the exhaust gases can cause ice to form at the vent termination point on the exterior wall. Ice buildup can partially or fully block the exhaust, triggering Code 10 (abnormal combustion) or Code 29 (blockage). Mitigation strategies: install a concentric (pipe-in-pipe) vent terminal designed to reduce freezing, position the vent termination in a sheltered location protected from prevailing winds, extend the vent termination with a snorkel-type extension to direct exhaust away from the wall, and manually clear ice buildup when observed. Some installations may benefit from an elbow directing the exhaust downward below the termination to prevent ice from sealing the opening.

How do I fix error code VENT ICE on my Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater?

The most successful fix is "Install a Concentric Vent Terminal with Snorkel Extension" (medium difficulty, ~120 minutes). Estimated DIY cost: $50-$100. HomeMD has 2 community-ranked fixes for this error.

Is error code VENT ICE on a Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater serious?

This error is rated warning severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater error VENT ICE myself?

Yes — the top-ranked community fix ("Install a Concentric Vent Terminal with Snorkel Extension") is rated medium difficulty and takes about 120 minutes. Tools needed: Cordless drill, Screwdrivers (Phillips and flathead), Adjustable wrench, Caulking gun.

How much does it cost to repair Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater error VENT ICE?

DIY cost: $50-$100. Professional repair typically costs $300-$450. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater have?

The Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater has 8 other known error codes, including: 05 (False Flame Detection), 10 (Abnormal Combustion — Blocked Vent), 11 (Ignition Failure — No Flame Detected), 12 (Flame Failure — Flame Lost During Operation), 14 (Thermal Fuse Activated — Overheat Safety), and 3 more.

What other error codes does the Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater have?

The Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater has 8 other known error codes:

05 — False Flame Detection (2 fixes)
10 — Abnormal Combustion — Blocked Vent (2 fixes)
11 — Ignition Failure — No Flame Detected (2 fixes)
12 — Flame Failure — Flame Lost During Operation (2 fixes)
14 — Thermal Fuse Activated — Overheat Safety (2 fixes)
16 — Overheating — Outgoing Water Too Hot (2 fixes)
24 — Abnormal Temperature Rise — Low Water Flow (2 fixes)
29 — Condensate Drain / Vent Blockage (2 fixes)

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