Upgrading to a 50 or 80-gallon State water heater is a major investment in your home’s comfort, but will it fit in your utility closet without remodeling or compliance issues?
This guide will help you measure your space, understand clearance and venting requirements, and decide if your utility closet is ready for your new State water heater.
🛠️ Typical Dimensions of 50 and 80-Gallon State Water Heaters
50-Gallon State Water Heaters:
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Height: 50-60 inches.
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Diameter: 20-24 inches.
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Clearance: At least 3 inches around the unit for airflow and servicing.
80-Gallon State Water Heaters:
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Height: 60-70 inches.
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Diameter: 24-28 inches.
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Clearance: At least 3-5 inches around the unit.
Check your specific model’s manual for exact dimensions or visit State Water Heaters.
🪟 Clearance and Ventilation Requirements
Clearance:
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Sides: Minimum 3 inches.
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Front: Minimum 12-24 inches for servicing.
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Top: Allow clearance for piping connections and expansion.
Ventilation (Gas Models):
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Proper venting for combustion gases.
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Adequate airflow for safe operation.
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Follow local code requirements.
🔇 Noise Considerations in Utility Closets
Water heaters generate expansion noises, heating element clicks, and water flow sounds.
Tips to reduce noise:
✅ Use vibration pads under the unit.
✅ Install the unit on a solid, level surface.
✅ Add insulation around pipes (avoid blocking airflow).
🏠 Weight and Flooring Requirements
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Weight of a 50-gallon filled: ~500 lbs.
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Weight of an 80-gallon filled: ~800 lbs.
Ensure your utility closet flooring can support this weight. Consider a drain pan with a drain line to prevent water damage.
🔥 Gas vs. Electric State Water Heaters: Space Differences
Gas Models:
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Require venting (vertical or side venting).
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May need additional clearance for combustion air.
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Install carbon monoxide detectors near the closet.
Electric Models:
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Do not require venting.
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Easier to fit in tight utility closets.
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Ideal for smaller utility spaces.
🚪 Utility Closet Design Tips for Water Heater Installations
✅ Use louvered doors for airflow.
✅ Leave a clear path for future maintenance.
✅ Avoid storing flammable materials near your water heater.
✅ Plan space for expansion tanks if required.
🛑 Code and Safety Compliance
Check:
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Local building and plumbing codes.
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Seismic strapping requirements in seismic zones.
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Clearance from combustibles.
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Combustion air requirements.
Non-compliance may result in inspection failures or safety hazards.
💡 Alternatives If a 50 or 80-Gallon Won’t Fit
If your closet is too small:
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Consider high-recovery smaller tanks (40-gallon with fast recovery).
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Explore State tankless water heaters to save space.
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Relocate the water heater to a garage or basement if possible.
For space-saving options, see Energy Star - Tankless Water Heaters.
✅ Conclusion: Planning for a Smooth Installation
Before Purchasing:
1️⃣ Measure your closet’s height, width, and depth.
2️⃣ Check venting paths (for gas units).
3️⃣ Confirm floor strength and drain availability.
4️⃣ Ensure you meet clearance requirements.
Next Steps:
✅ Explore compatible models on The Furnace Outlet.
✅ Consult with a licensed plumber or HVAC professional to confirm your utility closet readiness.
✅ Check local codes for installation requirements.
By planning carefully, your 50 or 80-gallon State water heater can deliver consistent hot water while fitting safely and efficiently within your utility closet, protecting your investment for years to come.
In the next topic we will read more about: State Water Heaters: Which Model Is Right for Your Home?
