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Did You Know?
The condenser coil on your air conditioner uses unfiltered outdoor air to reject heat and therefore requires cleaning. A dirty coil that only raises the condensing temperature 10 degrees, reduces capacity 7% and adds 10% in power consumption.

You Get What You Pay For
Chief Engineer

The old adage “you get what you pay for” is never more true than in the design and construction of a new HVAC system or the purchase of a maintenance contract. Poor design or workmanship can sabotage even the best equipment, making a remedy far more costly later.

There are several potential problems inherent in a low-bid situation.
Often, the company which poses the lowest bid is the one whose ability to provide accurate cost estimates is, well, less than perfect. For example, if a person scouting the job misses details like the need for scaffolding or some wiring to a unit that demands the time of an electrician, and he begins to realize the cost impact on his margins, he will look for some way to come back to the customer for recovery of those dollars.

There are some contractors who make a habit out of bidding low, securing the work and then discovering “surprises” that they then use to solicit additions to the cost of the project.

A company whose bid is based on quality work will know how to prepare thoroughly for each proposed project, visiting the site at least once and learning all they can about conditions under which they must work. Their proposals will clearly define the proposed scope of work in order to avoid surprises after the project is started.

Another problem inherent in selecting contractors based solely on low bid is simply the quality of engineering and workmanship. Design or engineering flaws may not be apparent immediately, and by the time they do arise it may be too late to have any recourse with the installing contractor. Similarly, inferior quality workmanship—substandard welding, inadequate sealing of ductwork, etc.—may not be obvious immediately but may become apparent later when it affects system performance.

Extra costs are sometimes a justifiable factor in a job. Unforeseen circumstances can occur which everyone will agree impacts the scope of the project. Occasionally the owner will request a change in the design of the project that will impact the cost. In these circumstances, all parties will recognize the change in the scope of work and agree to a cost adjustment.

Making price the primary consideration when looking at an HVAC maintenance program can be even more problematic. It’s just too easy for low-bid companies to get away without performing the recommended maintenance.

If all a company has to do to be selected contractor is to be the low bid, they can simply cut back on the maintenance being performed. Maybe the filters get changed, but will it be noticed immediately if bearings are not lubricated, or if coils are not thoroughly cleaned, or if compressor oil is not changed? Chances are these items will not be detected immediately but they will ultimately result in unnecessary breakdowns, which will cost the building owner far more than if they had just paid for preventive maintenance to begin with.

Going with the low price may seem to be the easy way out for purchasing managers or other decision makers. In fact, it seems to be a common defense when things go wrong: “Well, I went with the lowest price.” Progressive and insightful decision makers, however, realize that often the low bid will end up being far more costly in the long run. They will take the time to research all the issues involved and will get “behind the numbers” to determine exactly what they will receive for the price.

What they should be looking for is the best value—many times it will not be the lowest price.