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HVAC Glossary

Is Your Building’s Comfort System Causing You Discomfort and Costing You $$$?


Long before your building’s comfort system actually breaks down it silently and unavoidably loses efficiency, leading to increased energy bills and decreased comfort. Improper maintenance can also lead to potential health and safety problems, as well as, decreased employee productivity.

There’s an old saying, “if it isn’t broke, don’t fix it.” However there’s another saying that makes much more sense, “An ounce of prevention is worth a pound of cure”.

Building Operation and Maintenance programs specifically designed to enhance operating efficiency of HVAC systems can reduce energy bills by 5% to 20% without significant capital investment.

Most organizations feel the growing pressure to reduce costs and increase profits. Having strategically partnered with hundreds of businesses, the John W. Danforth Company has the experience to help you balance these issues without compromising the quality of the services your facility requires. We see the following benefits as a direct outcome:

• REDUCED EMERGENCIES
• EXTENDED EQUIPMENT LIFE
• REDUCED ENERGY CONSUMPTION
• OPTIMIZED PRODUCTIVITY
• IMPROVED SYSTEM RELIABILITY
• CONTROL OF MAINTENANCE BUDGET
• OBTAIN SINGLE SOURCE RESPONSIBILITY
• REDUCED OPERATING PROBLEMS
• OPTIMIZED COMFORT CONDITIONS

Do you:

Perform scheduled preventative maintenance?
Have a source for fast, reliable 24 hour emergency service?
Have specialized, certified, in-house HVAC maintenance personnel?
Monitor and record maintenance tasks?


The John W. Danforth Company has made a commitment to work with building owners and managers to develop proactive preventative maintenance programs to help reduce their operating costs and extend the life of their critical equipment. We are uniquely qualified to custom-design a program that addresses the specific needs of your facility and it’s budget. We would welcome the opportunity to discuss your facility’s operation and preventative maintenance requirements.


Clean Coils Reduce Energy Costs

MODERATELY
DIRTY CONDENSER

CLEAN
CONDENSER

NOMINAL
TONS
COOLING

KWH/
SEASON

COST
KWH/
SEASON
COST
COST
SAVINGS

3

5,700

$ 522

4,100

$ 397

$ 155

5

8,100

$ 785

5,500

$ 533

$ 252

7 ½

11,200

$1086

7,400

$ 717

$ 369

10

16,800

$1629

12,300

$1193

$ 436

15

24,400

$2366

16,000

$1552

$ 814

20

32,400

$3142

20,800

$2017

$1125

25

40,800

$3957

27,000

$2619

$1338

30

48,900

$4743

30,800

$2987

$1756

40

66,400

$6440

41,500

$4025

$2415

50

82,300

$7983

52,100

$5053

$2930

60

98,600
$9564
63,000
$6111

$3453


Based on .06/KWH


Cause and Effect of Inadequate
Preventative Maintenance


CONDITION CAUSE EFFECT

DIRTY AIR FILTERS

  • Restricted Evap Coil
  • Plugged Motor Passages
  • Dirty Blower Wheels
  • Loss of Airflow
  • Refrigerant Flooding
  • Compressor Failure
  • Bearing Failure
  • Increased Energy Consumption
  • Evap Motor Failure

FAULTY DRIVE
BELTS

  • Loss of Airflow
  • Refrigerant Flooding
  • Sheave Wear
  • Compressor Failure
  • Pulley Replacement
  • Noise
  • Evap Motor Failure

DIRTY MOTORS

  • Overheating Windings
  • Motor Component Failure
  • Increased Electrical Consumption

BURNT CONTACT
POINTS

  • “Single Phased” Components
  • High Point Resistance
  • Premature Component Failure
  • Increased Electrical Consumption

REFRIGERANT
LEAKS

  • Improper System Charge
  • Safety Control Cycling
  • Loss of Lubrication
  • Compressor Failure
  • Increased Energy Consumption
  • Decrease in System Capacity
  • System Freeze-up

PLUGGED DRAINS

  • Water Build-up
  • Flood over onto Ceiling
  • Leaks onto Roof

TRASH ON ROOF

  • Unsafe Conditions
  • Roof Damage
  • Injuries
  • Roof Leaks
  • Roof Repairs

MISSING/LOOSE
PANELS

  • Conditioned Air Lost
  • Water Infiltration
  • Increased Energy Consumption
  • Equipment Damage
  • Rust and Corrosion


For more information on preventative maintenance, you can Contact Danforth right now!
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