Hayward UHXNEGVT14008 Negative Pressure Vertical Indoor Vent Kit - 8 inch Adapter For H400

What This Part Is Used For
The Hayward UHXNEGVT14008 is a negative pressure vertical indoor vent kit for compatible Hayward heaters. It is listed with an 8 inch adapter for H400 applications. This kit is used to route heater exhaust vertically in indoor installations that require negative pressure venting.

Why This Part Matters
Indoor heater venting must be correct for safe operation and reliable draft. The wrong vent configuration can cause nuisance shutdowns, poor combustion performance, and unsafe exhaust handling. Using the correct kit helps ensure the heater vents properly in a negative pressure setup. Proper venting is also critical when replacing a heater in an existing indoor mechanical room.

Key Features and Specifications

• Manufacturer part number: UHXNEGVT14008
• Negative pressure vertical indoor vent kit
• Includes 8 inch adapter as listed
• Specified for H400 applications
• Used for vertical indoor venting on compatible Hayward heaters

Installation and Fitment Guidance
Indoor venting work should be performed with the heater powered off and the unit cooled. Verify vent sizing and routing match the heater requirements and local codes for your installation. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward manufactures complete pool systems including pumps, filters, heaters, automation controls, cleaners, chlorination equipment, and service parts. Their heaters integrate with Hayward circulation systems and are supported with application specific venting components. This ecosystem approach helps keep installs consistent across residential and light commercial setups. Hayward service parts are widely available through the pool trade.

Common Service Context
Techs typically use this kit during indoor heater installs, heater upgrades, or vent system corrections where negative pressure vertical venting is required. It is commonly identified when an H400 heater installation needs an 8 inch transition at the vent outlet.