Why Buy Heat

Why Buy Heat

Why purchase a HEAT Hot Oil unit?

When those “Budget” units are so much cheaper?


A properly designed hot oil system can provide many years of safe, reliable service.  But, an improper design can present both a fire and safety hazard for personnel. The existence of these hazards has resulted in the development of a wide range of codes and standards covering the design and installation of hot oil systems.  These codes and standards are now requirements of most local building codes, insurance companies and thermal fluid manufacturers.

Don’t be fooled into thinking that all hot oil systems are designed to give you the safety and performance you would expect…

In fact, most low priced hot oil systems are designed specifically to reduce the cost of the system at the expense of safety and performance.

Would you knowingly install a hot oil system that does not meet national and local codes? Would you want to expose your company to additional liability by installing a hot oil system that does not meet the requirements of the fluid manufacturer or your insurance company?

Check with your local codes and your insurance provider. Also, get advice from your fluid supplier, most have design guides available.

The following are codes and standards that will most likely apply to the installation of a new hot oil system:

NFPA 30 – Flammable and Combustible liquids code - which requires that hot oil piping be constructed in accordance with ANSI B31 code for pressure piping.

OSHA Standard 1910.106 Flammable and Combustible liquids

ANSI B31 – Power Piping Code – which requires a welded piping system for hot oil.

ASME – Boiler & Pressure vessel code – Applies to all vessels operating at over 15 psig

Most local codes will require that hot oil piping be insulated for personnel protection. With an insulation thickness based on external jacket temperatures that do not exceed 125°F for heat conductive metal jackets, or 140°F fo r non-heat conductive jackets.

NFPA 70 - National Electric Code

NFPA 79 - Electrical Standard for Industrial Machinery

NFPA 87 -  Recommended Practice for Thermal Fluid Heaters

FM Global – Property Loss Prevention Data Sheets #’s: 7-99 & 7-88

This or similar standards will normally be required by your insurance provider.  Some key features of this standard include:  Welded piping systems per ANSI B31, flanged connections with spiral wound gaskets, ASME vessels and tanks, non-wicking cellular glass pipe insulation, no use of copper, bronze or cast iron in piping, as well as a wide range of required safety and control interlocks and alarms.

When you Consider the following – You will find the “Budget” units are actually more expensive.

Downtime – If the Budget unit is out of service a high percentage of the time, how much lost production time cost will you have?

Fluid Replacement – If you constantly need to add fluid to the budget unit, from leaking pipe threads and leaking pumps, you will quickly outspend the savings from the initial purchase on replacement fluid and fluid disposal costs.

Fluid Fouling  -  The inherent design of the Budget system’s expansion tank leads to premature fluid oxidation and fouling; which can often lead to reduced output and reduced process productivity

Maintenance – If the Budget unit requires you to constantly purchase replacement parts, you will spend much more money through increased maintenance expenses.

Product Quality – If the Budget Unit creates unacceptable temperature swings and result in product quality problems, you will spend far more money on production rejects.

Insurance – If your insurance company raises your rates because the Budget equipment does not meet OSHA, NFPA and ANSI standards, you will spend far more money on increased insurance costs.

Factory Support – If the manufacturer of the Budget unit does not provide technical assistance, your Plant Engineering staff will spend many long hours trying to make the Budget unit work.

Safety – If an employee slips on leaking oil; or is burned on the hot oil; or if the leaking oil catches fire, you may encounter significant downtime, replacement cost, and risks to