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Reference

Glossary

Canonical plain-English definitions for HVAC, IAQ, ductwork, maintenance, financing, quote review, and commercial plumbing terms used across Buffington Brothers resources.

Back to Learning Center Browse terms

How to use this glossary

Decode the estimate before you decide.

Learn

Understand terms and warning signs before you call or approve work.

Compare

Use shared language to compare proposals, financing, rebates, and maintenance value.

Act

Bring clearer questions to service, quote review, or planned maintenance conversations.

HVAC equipment & efficiency

HVAC equipment & efficiency

Use these terms when comparing repair recommendations, replacement proposals, heat pumps, furnaces, air conditioners, and ductless systems.

HVAC equipment & efficiency

Heat pump

A heating and cooling system that moves heat instead of creating it. In summer it moves heat outdoors; in winter it moves heat indoors when matched to the home and climate.
Useful when
You are comparing all-electric, dual-fuel, replacement, or room-by-room comfort options.
Learning CenterFinancing

HVAC equipment & efficiency

Dual fuel

A heat pump paired with a furnace or backup heat source. The system can switch based on outdoor temperature, comfort needs, and operating cost.
Useful when
You want heat-pump efficiency without giving up furnace backup during colder Southeast Missouri and Northeast Arkansas weather.
Compare optionsQuote review

HVAC equipment & efficiency

Ductless mini-split

A heat-pump system with an outdoor unit and one or more indoor heads. It conditions a room or zone without traditional ductwork.
Useful when
You have an addition, bonus room, shop, office, or older space that does not connect well to the central duct system.
ServicesLearning Center

HVAC equipment & efficiency

SEER2

Seasonal Energy Efficiency Ratio 2. It is a cooling-efficiency rating under updated test conditions. Higher ratings can reduce cooling energy use, but installation and sizing still matter.
Useful when
You are comparing air conditioner or heat-pump replacement proposals.
Free quote reviewCompare scope

HVAC equipment & efficiency

HSPF2

Heating Seasonal Performance Factor 2. It is a heat-pump heating-efficiency rating under updated test conditions.
Useful when
You are comparing heat-pump heating performance and expected operating cost.
FinancingLearning Center

HVAC equipment & efficiency

AFUE

Annual Fuel Utilization Efficiency. It describes how efficiently a furnace converts fuel into usable heat.
Useful when
You are comparing furnace replacement options or deciding whether an older furnace still makes sense.
ServicesQuote review

HVAC equipment & efficiency

Load calculation

A sizing process that accounts for home size, insulation, windows, air leakage, orientation, occupancy, and local weather before equipment is selected.
Useful when
A replacement quote recommends a larger or smaller system without explaining why.
Compare scopeFree quote review

Airflow, IAQ & the building shell

Airflow, IAQ & the building shell

Comfort problems are not always solved at the equipment cabinet. Airflow, ductwork, filtration, humidity, and insulation often shape the right answer.

Airflow, IAQ & the building shell

IAQ

Indoor air quality. Common IAQ work includes filtration, humidity control, ventilation, UV lights, duct cleaning, and air purification.
Useful when
Rooms feel stale, dust returns quickly, humidity is uncomfortable, or allergy symptoms seem worse indoors.
Learning CenterServices

Airflow, IAQ & the building shell

Humidity control

Managing indoor moisture so the home feels comfortable and the system does not fight excess humidity or over-dry winter air.
Useful when
The house feels clammy, dry, musty, or hard to cool even when the thermostat number looks right.
IAQ topicsContact

Airflow, IAQ & the building shell

Duct leakage

Conditioned air escaping through gaps, loose connections, damaged ductwork, or poorly sealed runs before it reaches the room.
Useful when
You have hot/cold rooms, high utility bills, dusty returns, weak airflow, or an equipment quote that ignores duct condition.
Learning CenterQuote review

Airflow, IAQ & the building shell

Return air

Air pulled back to the HVAC system to be filtered, conditioned, and redistributed. Poor return-air paths can starve equipment and reduce comfort.
Useful when
Bedrooms pressure up with doors closed or airflow drops after filter changes.
ServicesLearning Center

Airflow, IAQ & the building shell

Duct cleaning

Cleaning debris from ductwork and related HVAC air paths. It is most useful when there is visible buildup, renovation dust, contamination, or airflow-related concerns.
Useful when
You see dust/debris in registers or need to pair cleaning with filtration and duct-condition review.
ServicesContact

Airflow, IAQ & the building shell

Attic insulation

Material that slows heat transfer between the living space and attic. Weak insulation can make HVAC equipment run longer and rooms feel uneven.
Useful when
You have comfort swings, high utility bills, or a replacement proposal that may be masking building-shell problems.
Learning CenterServices

Quotes, maintenance & savings language

Quotes, maintenance & savings language

These terms help homeowners compare proposals and avoid making a large decision from price alone.

Quotes, maintenance & savings language

Scope of work

The exact work included in a proposal: equipment, labor, accessories, ductwork, disposal, controls, permits, cleanup, and exclusions.
Useful when
Two quotes look different in price but may not include the same work.
Quote reviewCompare

Quotes, maintenance & savings language

Maintenance agreement

A recurring service plan. Buffington's known plan includes spring and fall tune-ups, priority service, and a parts discount.
Useful when
You want planned visits, cleaner service records, and fewer peak-season surprises.
Maintenance planLearning Center

Quotes, maintenance & savings language

Priority service

A service-agreement benefit that helps plan members get scheduling preference when call volume is high.
Useful when
You are weighing whether plan convenience matters as much as tune-up frequency or discount language.
Maintenance planContact

Quotes, maintenance & savings language

Manufacturer rebate

A savings offer from an equipment manufacturer. Eligibility, dates, model requirements, and paperwork must be confirmed before relying on it.
Useful when
A quote mentions Carrier, equipment savings, or a limited-time incentive.
Quote reviewFinancing

Quotes, maintenance & savings language

Utility rebate

A savings offer from a utility or program administrator. It may depend on equipment type, efficiency, installation date, documentation, or location.
Useful when
You are comparing heat pump, ductless, IAQ, or efficiency project economics.
Learning CenterFinancing

Quotes, maintenance & savings language

Financing terms

The lender-controlled details of a financing offer, including approval, monthly payment, promotional period, rate, fees, and repayment requirements.
Useful when
A proposal presents monthly comfort cost instead of only the project total.
FinancingQuote review

Commercial plumbing & building uptime

Commercial plumbing & building uptime

Buffington's plumbing surface is commercial-focused. These terms are written for facilities, storefronts, churches, schools, offices, and property managers.

Commercial plumbing & building uptime

Commercial plumbing

Plumbing work for commercial buildings, including drains, sewer, backflow, water heaters, fixtures, gas lines, pipe repair, and building-specific service needs.
Useful when
You are planning work around tenants, customers, production, events, or school/church schedules.
ServicesContact

Commercial plumbing & building uptime

Building uptime

The practical goal of keeping a facility usable while HVAC or plumbing work is planned, staged, repaired, or replaced.
Useful when
Downtime, access, shutoff windows, after-hours work, or tenant impact matter as much as the repair.
Learning CenterContact

Commercial plumbing & building uptime

Backflow

A condition where water flows the wrong direction. Commercial backflow prevention helps protect potable water systems.
Useful when
A building has cross-connection risk, inspection requirements, or plumbing changes tied to public water protection.
Commercial servicesContact

Commercial plumbing & building uptime

Fixture schedule

A project list of plumbing fixtures, their locations, and the products or requirements tied to each one.
Useful when
A commercial plumbing quote needs coordination across restrooms, kitchens, service areas, or multi-fixture projects.
Quote reviewContact

Commercial plumbing & building uptime

Shutdown window

A planned period when water, gas, drains, HVAC, or building access may be limited so work can be completed with less disruption.
Useful when
A repair affects business hours, customer areas, classrooms, worship services, or occupied tenant spaces.
Commercial servicesContact

Decision checklist

Before you approve the work.

A glossary only helps if it changes the questions you ask. Use these prompts when a repair, replacement, maintenance, financing, or commercial plumbing proposal feels hard to compare.

Diagnosis

What test or symptom proves this is the right repair?

Ask for the measurement, failed part, airflow finding, leak location, or building condition behind the recommendation.

Scope

What is included, and what is excluded?

Compare equipment, labor, ductwork, controls, cleanup, warranty notes, and any commercial access or shutdown requirements.

Outcome

What problem should be better after the work?

Tie the proposal back to comfort, humidity, uptime, efficiency, safety, or reliability instead of approving a vague line item.

Next step

Do I need service, maintenance, financing, or quote review?

Use the glossary to ask clearer questions, then call Buffington or compare a written quote before committing.

Compare a quote Call (573) 785-6768