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    Velit diesel air heater 14,000 BTU - image 1
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Velit diesel air heater 14,000 BTU - image 1
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Velit Diesel Air Heater 14,000 BTU 4,000W 12V Pro with Lambda

Regular price
$901.55
Sale price
$901.55
Regular price
$949.00
✓ Lowest Price Guaranteed  ·  We check U.S. dealer prices every week. Found it cheaper? We’ll beat it.
↻ 30-day price protection  ·  If our price drops after you buy, we email you the difference as store credit. Details

Will it fit my RV?

✓ Universal fit — standard sizes and connections used across most RVs.

Find parts that fit your RV →  ·  Not sure? We’ll confirm fit

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✓ Free Shipping  ·  ✓ Free 30-Day Returns
Prepaid return label, no restocking fee. Details

The Velit diesel air heater is a 12V parking heater for vans, RVs and trucks. Built-in carbon monoxide and flammable gas sensors shut it off automatically if a leak or dangerous gas builds up, and a barometer adjusts the fuel mix for altitude to cut carbon buildup. The smart Bluetooth thermostat comes standard, and the install kit includes the auxiliary fuel port adapters for Sprinter, Transit and Promaster vans. The Pro version adds Velit's Lambda AFR combustion monitor, which gives the heater closed-loop fuel control for steadier, cleaner burning.

Key specs

  • Fuel: Diesel
  • Heat output: 14,000 BTU (4,000 W)
  • Built-in carbon monoxide and flammable gas sensors with automatic shut-off
  • Barometer-based altitude compensation, tested above 11,000 ft
  • Bluetooth control from up to 100 ft with the smart thermostat (standard)
  • Japanese glow plug, weather-sealed controller
  • Two-year limited warranty from Velit
  • Includes Velit Lambda AFR: closed-loop combustion control, Smart Priming and Smart Ignition

In the box

  • Heater
  • Smart Bluetooth thermostat
  • Complete installation kit
  • Auxiliary fuel port adapters for Sprinter, Transit and Promaster
  • Cleaning straw
  • Velit Lambda AFR combustion monitor

Ships from our Upland, CA warehouse or direct from Velit's US warehouse. Questions about fit or wiring? Our team answers by phone, chat and email.

Eligible unused and uninstalled physical products may be returned
within 30 days after delivery.

Regular sale and discounted products are eligible for return.
Only products clearly marked “Final Sale” before purchase are
non-returnable.

Conditions and exclusions apply. See our Return and Refund Policy.

Free standard shipping is available on eligible physical-product orders delivered within the contiguous United States, with no minimum order amount.

Black Series generic replacement parts and products or orders that are oversized, require freight shipping, are special-order, contain hazardous materials, or are delivered to remote or limited-access areas are excluded. Any applicable shipping charge will be displayed at checkout before you submit your order.

In-stock products are generally processed within 1–2 business days. Estimated delivery is approximately 4–12 business days, depending on the product, destination, carrier, and delivery method.

Alaska, Hawaii, U.S. territories, and international destinations are not included in the contiguous United States free-shipping offer. See our Shipping Policy for complete details.

Buying a system, not just a part?

At this size the right answer depends on your rig, your loads and how you camp. Tell us what you are trying to run and we will price the whole build before you order - cable, fusing and all - or confirm this is the right part for the job.

Talk to a power specialist - 1-844-GIANT-44 (844-426-8344)   Book a consultation  ·  Size it yourself  ·  Pay over time

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