A Reddy Heater Pro 155 typically costs about $100-$350 used, depending on condition and included parts; a comparable new 155,000-BTU forced-air kerosene heater may cost $250-$500. Age, operating condition, local availability, and repair needs have the biggest effect on the price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Used Pro 155 | $100 | $225 | $350 | Working unit, condition and accessories vary |
| Comparable new heater | $250 | $375 | $500 | Current 150,000-155,000-BTU class models |
| Repair allowance | $25 | $100 | $250+ | Parts and service depend on the fault |
| Fuel use | $3 | $5 | $8 per hour | Approximate, based on fuel price and burn rate |
What a Reddy Heater Pro 155 usually costs
The Pro 155 is a portable, forced-air construction heater rated around 155,000 BTU per hour. Because it is an older product and may no longer be sold as a current model, shoppers often find it used rather than through regular retail channels. A reasonable budget is $100-$350 for a used unit that starts, runs, and has no obvious damage.
For a tested, ready-to-use example, about $175-$275 is a practical target. Lower listings may be untested, incomplete, or sold for parts; higher prices are more defensible when the heater is demonstrated working and includes a usable fuel cap, cord, wheels, and manuals. A current comparable model generally costs $250-$500 before tax and any delivery charge.
Assumptions: U.S. private-party or local resale pricing, standard condition, no major repair, and pickup rather than freight shipping.
How fuel, parts, and testing shape the sale price
With an older heater, the advertised price is only part of the buying decision. A seller’s test, the condition of the combustion and fuel systems, and the cost to transport the unit can change the real amount paid. The following ranges are planning estimates, not a guaranteed parts list for every Pro 155.
| Cost item | Low | Typical | High | What changes the charge |
|---|---|---|---|---|
| Used heater | $100 | $225 | $350 | Testing, condition, accessories |
| Basic tune-up parts | $20 | $60 | $120 | Filter, nozzle, or small service items |
| Repair labor | $75 | $125 | $200 | Shop rate and diagnostic time |
| Local delivery | $0 | $25 | $75 | Distance, loading, and stairs |
| Fuel for initial test | $10 | $20 | $35 | Fuel type and local gallon price |
A low purchase price can disappear quickly if the heater needs a control, motor, or fuel-system repair. Ask for a cold-start demonstration and a sustained run when practical. A shop diagnostic may add roughly $50-$100 before parts, so confirm whether that fee is credited toward repair.
Which 155,000-BTU specs and faults change the quote
Output rating alone does not establish value. A Pro 155 that lights reliably, maintains a steady flame, and shuts off correctly is worth more than a similar-looking unit with uncertain operation. A clean fuel tank and intact wiring matter because age, storage conditions, and fuel residue can create service needs.
Check the data plate and confirm the actual model and fuel requirements before purchase. A missing plate or unreadable label makes it harder to verify specifications and source compatible parts. A unit that runs for only a few minutes, smokes heavily, surges, or trips its safety control should be priced as a repair project, not as a ready-to-use heater.
Budget an extra $75-$250 or more if testing reveals a repair rather than routine maintenance. Parts availability can vary for discontinued equipment, and a technician may recommend replacing an obsolete or hard-to-source component instead of repairing it.
Used Pro 155 or comparable new heater
Buying used can save money when the heater is complete and demonstrably functional. A used purchase around $225 may still be a good value if it needs only a modest tune-up; it is less attractive if the total approaches the price of a new comparable unit with a current warranty and easier parts support.
| Option | Purchase price | Likely added cost | Budget implication |
|---|---|---|---|
| Untested Pro 155 | $100-$175 | $75-$250+ repair | Lowest entry price, uncertain total |
| Tested used Pro 155 | $175-$300 | $0-$100 tune-up | Moderate cost if operation is verified |
| Comparable new unit | $250-$500 | $0-$75 delivery or setup | Higher purchase price, current support may help |
Compare the complete ready-to-run cost, not just the seller’s asking price. New models can differ in controls, tank capacity, and warranty, so confirm that the replacement meets the intended heating requirements.
How long testing and repairs can take
A simple inspection and functional test may take 30-60 minutes when fuel and a safe test area are available. A basic service appointment commonly involves 1-2 labor hours, while diagnosing intermittent starting or flame problems can take longer. Shop labor often runs about $75-$125 per hour, with regional and minimum-charge differences.
A one-hour repair at $100 per hour plus $60 in parts brings a $225 heater to about $385 before tax. Ask whether the shop charges a separate diagnostic fee, and get authorization limits before work begins.
What kerosene operation adds to the ownership budget
At an approximate burn rate of 1.1 gallons per hour, a 155,000-BTU class heater can consume roughly 8-9 gallons during an eight-hour operating day. At $3-$6 per gallon, that is about $24-$54 per day. Actual consumption and fuel cost vary with the specific unit, fuel type, local price, and operating time.
Over 100 operating hours, fuel alone could total approximately $330-$660 at that rate and price range. This expense can exceed the purchase price, so intended hours of use are central to comparing a used heater with a newer model. Use only the fuel specified by the manufacturer, and follow the unit’s ventilation and operating instructions.
For frequent use, estimate fuel cost before deciding that a low used price is the cheapest option. Also allow for periodic cleaning and replacement of service parts rather than assuming a used unit needs no upkeep.
Where buyers can trim the Pro 155 price
Set a maximum all-in price before negotiating: purchase price, likely parts, delivery, and any diagnostic fee. Request a video or in-person demonstration showing startup and steady operation, and check whether common accessories are included. Local pickup can avoid freight costs, but the heater should be transported securely and inspected before payment.
Skip an unverified premium for appearance and spend only for documented condition or useful included equipment. If a used Pro 155 needs a major repair, compare the repair estimate with a new comparable heater instead of automatically buying parts. For occasional use, a tested used unit may make sense; for regular operation, warranty coverage and parts support may justify the higher new-unit price.