A power outage can be a minor inconvenience or a serious disruption, depending on your household. If your home relies on electrically powered medical equipment, a sump pump, refrigeration, a well pump, or a home office, losing power may quickly become more than an annoyance.
A home generator can provide valuable protection, but it is not the right purchase for every homeowner. Before choosing one, consider your outage history, the equipment you need to operate, your available fuel supply, and whether your electrical system can safely support the installation.
Do I Really Need a Home Generator?
Start by thinking about how frequently your property loses power and what happens when it does. Some Denver-area households can comfortably manage a brief outage, while others need reliable backup power to protect their family, property, or ability to work.
A generator may be worth considering if your home has any of the following:
- Medical equipment that requires a continuous electrical supply
- A sump pump that helps prevent basement flooding
- A refrigerator or freezer containing valuable food or medication
- A home office that must remain connected and operational
- An electrically powered heating system or essential HVAC equipment
- A well pump or other critical household equipment
The goal is not necessarily to keep every light and appliance running. For many families, the right generator is one that keeps a carefully selected group of essential circuits powered until utility service returns.
How Often Does Your Home Lose Power?
Think about the outages you have experienced during the past several years. Consider how often they occurred, how long they lasted, and whether they were caused by snow, wind, lightning, equipment failures, or nearby construction.
Ask yourself these questions:
- Do outages occur several times during a typical year?
- Have previous outages lasted for several hours or longer?
- Does anyone in the home have a health or mobility concern?
- Would an outage prevent you from working or operating a home business?
- Could a loss of heat or sump pump operation damage the property?
- Would spoiled food or temporary lodging create a meaningful expense?
If outages are rare and brief, a whole-home generator may provide more capacity than you need. If losing power creates a safety concern or exposes your home to expensive damage, automatic backup power may be a practical long-term investment.
Which Parts of Your Home Need Backup Power?
Make a list of the systems you would want to use during an outage. Separate true necessities from conveniences because that decision will directly affect generator size and installation cost.
Essential Loads
Essential loads are the circuits that protect your household or property. These commonly include:
- Refrigerators and freezers
- Furnaces, boilers, or critical HVAC components
- Sump pumps and well pumps
- Medical and mobility equipment
- Security systems and communication equipment
- A limited number of lights and outlets
Optional Comfort Loads
You may also want to operate a microwave, television, internet equipment, garage door opener, or selected kitchen appliances. These items can improve comfort, but including too many of them may require a larger and more expensive generator.
Do not size a generator by guessing or adding up appliance labels on your own. Some motors and HVAC systems need considerably more electricity when starting than they consume while running. A qualified electrician can calculate these starting and running loads accurately.
Portable Generator or Standby Generator?
Portable and standby generators serve different needs. Understanding the difference can prevent you from paying for capacity you will not use or purchasing a system that cannot safely meet your expectations.
Portable Generators
A portable generator may be suitable for occasional outages and a limited number of essential items. It generally requires manual setup, an outdoor operating location, fuel storage, and either properly rated extension cords or a professionally installed transfer device.
Portable models typically involve:
- A lower initial purchase price
- Manual startup and refueling
- Limited electrical capacity
- Careful outdoor placement during operation
Never operate a portable generator inside a house, garage, basement, shed, or enclosed space. It must be placed outdoors according to the manufacturer’s instructions so exhaust and carbon monoxide do not enter the home.
Standby Generators
A standby generator is permanently installed outside the home and connected to the electrical system through an automatic transfer switch. When utility power fails, the system can detect the interruption, start the generator, and transfer selected circuits or the entire home to backup power.
Standby systems commonly provide:
- Automatic startup during an outage
- More capacity for household systems
- A permanent connection to an approved fuel source
- Less hands-on work when the power fails
Homeowners considering a permanent system can learn more about professional Denver generator installation, including the planning and electrical work involved.
How Much Generator Capacity Do You Need?
Generator capacity is measured in watts or kilowatts. The correct capacity depends on which circuits will operate simultaneously and how much power each connected item needs when starting and running.
A professional load calculation should account for:
- The home’s existing electrical service and panel capacity
- Essential appliances and their starting requirements
- Heating, cooling, and pump equipment
- Any planned home additions or future electrical upgrades
- Whether individual circuits or the whole home will be backed up
- The generator manufacturer’s installation requirements
A generator that is too small may overload or shut down. A significantly oversized unit may cost more to purchase and operate without providing a meaningful benefit. Accurate sizing helps balance reliability, fuel use, and budget.
What Fuel Will the Generator Use?
Generators may operate on natural gas, propane, gasoline, or diesel, depending on the equipment. Your options can be affected by the fuel already available at your property, local installation requirements, generator placement, and how long you want the system to run.
Before selecting a fuel type, consider:
- Whether your home already has natural gas or propane service
- How fuel will be stored or supplied during a long outage
- How often the generator will require refueling
- The maintenance needs of the selected generator
A permanent standby generator may need coordination between electrical and fuel connections. The complete installation should be planned before equipment is purchased so you do not end up with a generator that cannot be properly placed, fueled, or connected.
Is Your Electrical System Ready?
Older homes may need electrical improvements before a generator can be installed. The condition of the main panel, available capacity, grounding, wiring, and proposed transfer equipment should all be evaluated.
A generator assessment may uncover the need for:
- An electrical panel upgrade or repair
- A dedicated generator connection
- An approved manual or automatic transfer switch
- Grounding, bonding, or surge protection improvements
A transfer switch is particularly important because it separates the home from utility power while the generator is operating. This helps prevent unsafe backfeeding and protects the generator when utility service returns.
Brothers provides comprehensive electrical services for Denver-area homes, including evaluations that can determine whether your current system is prepared for a generator.
What Should You Budget Beyond the Generator?
The equipment price is only one part of a permanent generator project. Installation costs vary because every property has a different electrical layout, fuel source, generator location, and site preparation requirement.
Your total budget may need to include:
- The generator and transfer equipment
- Electrical wiring and panel modifications
- A concrete pad or approved mounting base
- Fuel-line work and related connections
- Required permits and inspections
- Ongoing testing and maintenance
Ask for a written estimate that clearly explains what is included. An honest assessment should also explain whether a smaller essential-load system could meet your needs instead of automatically recommending the largest available generator.
Where Can a Standby Generator Be Installed?
A standby generator cannot simply be placed wherever there is open space. Its location must account for exhaust, windows, doors, vents, fuel equipment, property lines, service access, and manufacturer clearance requirements.
Denver-area properties can present additional planning challenges, including compact lots, mature landscaping, snow accumulation, and older electrical layouts. A site visit allows an electrician to identify a practical location before you purchase the equipment.
What Maintenance Will a Generator Need?
A generator may sit unused for long periods, but it still needs attention. Routine testing helps confirm that the battery, fuel system, controls, and engine are ready before the next outage.
Typical maintenance considerations include:
- Regular automatic exercise cycles
- Oil, filter, and battery checks
- Inspection of electrical and fuel connections
- Keeping the surrounding area clear of snow and debris
A generator is emergency equipment, so reliability matters more than appearance. Follow the manufacturer’s maintenance schedule and address warning lights, unusual sounds, or failed exercise cycles promptly.
Questions to Ask Before You Buy
Before selecting a generator or signing an installation agreement, ask for clear answers about the complete project. You should understand what the system will power, how it will operate, and what responsibilities you will have after installation.
- Which circuits and appliances will this generator support?
- How was the recommended generator size calculated?
- Will my electrical panel need to be upgraded?
- What type of transfer switch will be installed?
- Where will the generator and fuel connection be located?
- What testing and maintenance will the system require?
- Which permits and inspections are included?
- What warranties apply to the equipment and installation?
A Practical Generator Assessment From a Local Team
Brothers Plumbing, Heating & Electric is family operated and centrally dispatched, serving Denver-area homeowners with a focus on Family, Care, Excellence. Our approach is simple: WE CARE, and we want you to understand your options before making a major home investment.
Our electricians can review your electrical service, discuss the systems you want to protect, calculate the necessary capacity, and explain potential installation requirements. You will receive practical information from a team committed to being Prompt, Professional, Reliable.
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Schedule generator or electrical service in the way that works best for your family. Our team will help you determine whether a generator makes sense and what type of system fits your household.
Protect More of Your Home With the Home Care Club
A generator is only one part of keeping a home safe and dependable. The Brothers Home Care Club helps homeowners stay ahead of maintenance needs across their plumbing, heating, cooling, and electrical systems.
If you have questions about membership, covered services, or how the program works, review the Home Care Club FAQs. Preventive attention can help identify concerns before they interfere with your family’s comfort.
Is a Whole-Home Generator Worth It?
A whole-home generator may be worth the investment when outages create safety risks, threaten property damage, interrupt medical equipment, or prevent essential household systems from operating. Its value depends on your outage exposure, power needs, budget, and plans for the property.
Can a Generator Power My Entire House?
Yes, some properly sized standby generators can support most or all household circuits. The answer depends on your electrical load, generator capacity, fuel supply, and whether high-demand equipment must operate at the same time.
What Size Generator Do I Need for My Home?
The correct size must be based on a professional load calculation. An electrician will consider running loads, startup demands, essential circuits, HVAC equipment, pumps, and the capacity of your electrical system.
Can I Install a Home Generator Myself?
Portable generators can be operated by homeowners when all manufacturer safety instructions are followed. Permanent standby systems require electrical, transfer-switch, fuel, placement, permitting, and inspection considerations that should be handled by qualified professionals.
How Does a Standby Generator Turn On Automatically?
An automatic transfer switch monitors utility power. When an outage is detected, it signals the generator to start and safely transfers the connected circuits to backup power.
How Long Can a Home Generator Run?
Runtime depends on the generator, connected load, fuel source, maintenance condition, and manufacturer limitations. A continuously supplied standby system may operate longer than a portable generator that requires manual refueling, but every unit must be operated according to its instructions.
Does a Generator Need Regular Maintenance?
Yes. Oil, filters, batteries, connections, controls, and exercise cycles should be inspected according to the manufacturer’s schedule so the generator is ready when utility power fails.
Should I Buy a Generator Before Scheduling an Electrical Assessment?
It is usually better to schedule an assessment first. A qualified electrician can confirm the needed capacity, available fuel options, electrical upgrades, transfer equipment, and suitable installation location before you commit to a particular generator.
