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Attic Insulation: Ensuring Your Home Doesn’t Gain or Lose Heat Too Quickly

Attic Insulation – Protecting Your Home from Heat Gain and Loss

Attic insulation can seem like one of those mundane, extraneous details of home maintenance. Fluffy stuff in your attic crawlspace? Why even worry about it, right? As it turns out, attic insulation is a very big deal and can have a significant impact on your home’s energy efficiency and your general well-being. Let’s take a closer look at attic insulation and how it helps your home maintain a comfortable temperature all year long.

Heat Flow

To understand insulation, you first have to understand how heat gets from place to place. Heat travels through three means:

  • Convection: The way heat circulates through liquids and gases. It’s what creates steam in a cup of coffee and is the reason that hot air rises while cold air sinks.
  • Conduction: When you dip a cold spoon into a cup of tea, it grows hot. This is an example of conduction—one thing sharing its heat with another thing to balance out the energy.
  • Radiation: One of the main sources of heat in the summer, radiant heat travels in a straight path and heats up anything in its way. The sun is the greatest source of radiant heat.

Your attic deals with a combination of all three. Furthermore, heat is quite the pervasive little force. It has a constant need to spread. Heat naturally flows to cooler areas, so in the winter, the heat inside your home seeps outside. In the summer, the sweltering outdoor air finds its way into your cool abode.

Winter Wonderland

But it’s more than just air moving from inside to outside, or vice versa. Heat moves within your home as well. During the winter, you turn on your heater to try to beat the chill, but your home isn’t as airtight as you think.

Considering that hot air naturally rises, a lot of the toasty air blowing from your heater seeps up into your attic. In an uninsulated attic, the air cools down. Remember how cool air sinks? Well, once it cools down enough, it moves its way back down to the rest of the house. That air eventually heats back up and moves back to the attic, and so on. It’s an awful cycle that wastes precious energy. Some sources suggest that your house loses up to a quarter of its total heat from your attic alone.


Insulation isn’t just important in the winter. In the summer, your attic is pretty much a storage space for heat, reaching ungodly temperatures. It may be a bearable 90 degrees outside, but your attic could reach upward of 150 degrees—more if your ventilation isn’t working properly.
The heat doesn’t stay in the attic either. It spreads into the rest of your home, which is why your ceiling may feel so hot. That heat forces your air conditioner to work overtime. Worse yet, if your air conditioning ducts run through the attic, your vents will do nothing but blow hot air.


Then there’s the sun itself. It shines down on everything, including your roof. Unfortunately for your home, most building materials soak up heat like a sponge and radiate it back in the process. Without insulation, the wood in your roof and ceiling warm up. That heat then radiates down to the rest of your home.

Material World

Insulation comes in a wide range of materials, including foil, foam boards, cellulose, and fiberglass. Bulky materials help control heat gained through convection and conduction, while rigid boards trap air to resist conductive heat flow. Foils and reflective insulation systems reflect radiant heat away from living spaces, keeping the sun from bearing down on your home.

Loose-fill and batt insulation are the most common forms of insulation installed in attics. When installed properly, loose-fill offers excellent coverage and is cheaper than batt and other types of insulation. Before you install any insulation, make sure you seal up any air leaks and repair damage in your roof if there is any. You should also combine your insulation with a radiant barrier to keep the sun off your roof.

Keep your attic insulated and you’ll save money on your air conditioning bill and stay cool all summer long. Call or contact Bob Jenson A/C for a free inspection and quote for attic insulation today!

Energy Efficiency Do’s and Don’ts

Energy Efficiency Dos and Don’ts During A Heat Wave

Weather has never been totally predictable. But there was a time when spring was spring and summer was summer—and heat waves came once a summer instead of once a month.

Just when you think the spring weather is finally becoming beautiful, that’s when a heat wave will strike. Don’t wait until a sudden 95-degree day to get your AC checked, and be sure to follow these simple techniques to keep your energy costs low as you attempt to stay cool at home.

Here are some energy efficiency dos and don’ts to consider for when the next wicked heat wave sweeps through your neighborhood.

A Couple of Don’ts

First, we’ll start with a few strategies you should never use in a heat wave. These are the things that could double your energy bills—or cause dangerous situations in your home.

Don’t Push the Limits of Your AC

The first mistake people make when it gets hot out is that they run the AC into the red zone. Just because it’s hotter outside doesn’t mean you have to compensate by creating a wintry environment inside. Use moderation; keep your home comfortable.

This is best achieved with a central air conditioning system or a ductless AC built into a specific room or set of rooms in your home. These systems do more than blow cold air in your face; they maintain a comfortable climate without constant changes in temperature. It’s efficient—and cost-effective.

Don’t Get Creative

You’ve seen it in movies and TV shows: the guy who rigs up three dozen fans in front of his fridge in order to blow that cool air into the living room. This kind of electrical creativity is a bad idea; obviously, it won’t work, but it’s also very expensive.

Moreover, you could overload a circuit with all those plugs. A fan in each room is ok, as long as you make the effort to turn them off when they’re not in use. Same goes for other appliances and gadgets: the less you have plugged into your walls, the less heat will circulate around your home. Think about how hot your laptop gets when it’s charging. Yes, even that will make a difference.

Don’t Stress

Finally, and perhaps most importantly, don’t overwork yourself. Stay relaxed and you won’t need to jack your AC unit up to the coldest setting, wasting money and straining your circuit breaker. That means refraining from excessive yard work and walking pets for long distances. Keep them in the shade, and do your best not to walk them in the middle of the day. Ergo, the cooler you remain during the day, the lower you can keep the settings on your AC. And that will save you money.

A Couple of Dos

Now here are some things you should do during a heat wave to cut costs and stay safe.


There are other ways to cool your body than just sitting in front of your AC’s vent. Drinking water and taking cool showers is a great way to keep your body temperature down. Plus, if you aren’t taking hot showers, you’ll save on gas or electricity!

Clean Air Filters

Keep your AC’s filters clean to ensure that you’re experiencing the best possible airflow. Plus, cleaning or replacing these filters will help your system maintain fresher air, which is a big part of feeling comfortable when the heat outside becomes unbearable.

If you’re unsure where these filters are located or how to clean them, call Bob Jenson’s skilled technicians for a quick and affordable maintenance service. No matter how hot it is outside, they’ll get your system cleaned up quickly so you can go back to enjoying the cool air.

Reduce Direct Sunlight

Though the morning or afternoon sun may light up your yard in a beautiful way, it’ll also light up your home—with heat. The Sun can pass UV light thru older windows and heat up surfaces inside your home, raising the temperature. If your gone at work all day consider closing the blinds or drapes to block out light.

Think About Insulation

Your attic is probably the hottest part of your home during a heat wave and it’s the fastest way heat enters your home. Adding a thermal barrier like Blown-in Insulation to a minimum of 12″ or more (R-30) is both very affordable and effective in reducing the heat load in your home and can reduce air conditioning bills up to 20%! Bob Jenson A/C can help you find out what your home needs, call or contact for a free estimate!

A heat wave can strike at any time in San Diego, and these days, it can be costly. Follow this guide and keep your bills low and your family comfortable.

Bob Jenson Air Conditioning Gets a New Look!

Refreshed style shows who we are!

Bob Jenson New Look

We are refreshing our fleet of trucks with a new look you might have already seen driving around San Diego. We have been working with Rheem to make this project happen. We sketched and mocked up the concepts in-house and reached out to CPR Signs to rebuild our logo from scratch and create the final truck wrap for our large box van. Buddy over at Santee BumperDoc took care of re-painting the front of the cab, bumper and installed a new grill to make it look as new. The guys at Line-X in El Cajon sprayed the back step bumper and it looks great. We are really happy to see the quality of work come together from all of these guys. We are working on bringing this look to our entire fleet and will be pulling up in front of your home in style!

Does Upgrading your Air Conditioning System Save You Money?

Should you Upgrade your Air Conditioning? San Diego Residents Read On!

With the cost of energy ever increasing, many of us are looking for ways to cut down on our utility bills. The biggest use of energy in our homes today is our appliances. Out of all of our appliances our air conditioning system uses the most electricity, up to 40% of our utility bill, especially during summer months. So how do we cut back on the monthly bills without losing our comfort? It may be time to look at the benefits of upgrading your old air conditioning system with something that provides better cooling at a higher efficiency. This info-graphic will show you how efficiency equals savings for years to come!

Upgrade Air Conditioning San Diego

Tips for saving cash on your next air conditioning system:

A new air conditioning system is certainly an investment into your home, your family and your comfort. That being said who doesn’t want a great deal? There are 3 things that can help offset the cost of a new comfort system:

Manufacturer Rebates

Check with your trusted air conditioning contractor to see if any brands are offering a rebate on high efficiency equipment. Since most top brands have comparable equipment take advantage of the brand that will save you some cash!

Tax Credits

Tax credits for air conditioning systems are still available for high efficient units. Ask a trusted contractor to see if the equipment your looking at qualifies. You can look at the bottom of this page to see the requirements.

Financing Options

A great financing plan can help you start saving on your electricity bills right away and get the comfort you were missing. This is a great way to offset the upfront cost of a new system. Whether you finance or not ask your trusted contractor what they offer and see what’s best for you!

Get a Free Estimate!

A trusted reputable HVAC company will not charge to sit down and help you decide on the best, energy saving equipment for your home. Make Bob Jenson AC one of your calls for a free estimate on your next air conditioning system, today!

2012 Angie’s List Award Winner!

Bob Jenson A/C has earned the service industry-coveted 2012 Angie’s List Super Service Award, an honor awarded annually to approximately 5 percent of all the companies rated on Angie’s List, the nation’s leading provider of consumer reviews on local service companies. This award reflects company’s consistently high level of customer service.

“It’s a select group of companies rated on Angie’s List that can claim the exemplary customer service record of being a Super Service Award winner,” said Angie’s List Founder Angie Hicks. “Our standards for the Super Service Award are quite high. The fact that Bob Jenson A/C earned this recognition speaks volumes about its dedication providing great service to its customers.”

Angie’s List Super Service Award 2012 winners have met strict eligibility requirements, including earning a minimum number of reports, an excellent rating from their customers and abiding by Angie’s List operational guidelines.

Service company ratings are updated daily on Angie’s List. Companies are graded on an A through F scale in areas ranging from price to professionalism to punctuality. Members can find the 2012 Super Service Award logo next to company names in search results on

Bob Jenson A/C thanks their customers on Angie’s List who gave their honest feedback about their great experience and know that it’s due to them that they are honored with this award. If you are an Angie’s List member, you can login and search for Bob Jenson A/C to find exclusive deals and discounts for members only!

Looking to decide whether Bob Jenson A/C is the right choice for your next system replacement, repair or maintenance? Check out the Reviews to see what customers are saying.

We’re Nest Certified Installers

We are excited to let you know we are Nest Certified Installers, which means our technicians can help you easily install your Nest thermostat and make sure your confident in using your Nest. Also many of our customers are choosing to go with Nest thermostats on there new comfort system installations. Most people don’t program their thermostats because they are so complicated and have been that way for years. Even if they have an efficient system they are missing out on great energy savings by running a scheduled program, up to 20% off there heating and cooling bills.

With Nest it’s so much easier to tell Nest how you like the comfort levels in your home by just using it. Nest learns what temp you like and when your home, it adapts to you. But as we know our schedules can change suddenly, image your coming home early and it’s cold out. You can control your Nest from your smart phone and bump up the temp a few degrees and walk thru the door to a cozy home. The newest version of Nest will now work with most system configurations including multi-stage heating and cooling, humidifying, dehumidifying and even zoning individual rooms. Call us today and ask if Nest can work for your existing system or how you can get Nest with your new comfort system installation.

Bob Jenson A/C is a Nest Certified Installer

Welcome to the New!


As you can see things are a lot different around here and we’re real excited about it. We’ve been working very hard to deliver a new experience when it comes to getting information and researching a trusted heating and air conditioning company. We’ve completely redesigned from the ground up for the best web experience possible. Here are some of the great new features:

Responsive Design

We are one of the first hvac companies in San Diego to offer an experience like this. We wanted people to have the same access to the entire site no matter what desktop or laptop screen size they have and no matter what device they are using, be it a tablet or smartphone. With responsive design the site reorganizes and resizes itself to whatever screen your using and it’s really cool. If your on a desktop or laptop try reducing the size your browser window and see what happens to the content! For tablet and smartphone users it means you get the full site, not a cheesy mobile version, and you don’t have to zoom in and out. You can literally navigate our whole site with your thumb while relaxing on your couch, now that’s convenient.

Call Button

Have you ever been browsing a website on your smartphone or tablet and couldn’t find the number to call? Or even if you did, you had to write it down then dial it later? Yeah us too. We’ve optimized our site for a better mobile and tablet experience by having a simple touch to call button at the top of every page. Yep, when you need to contact us just tap it to call our office and speak with a real person, imagine that!


We’ve organized our Home page so you can instantly find what your looking for, whether it’s one of our services, blogposts, or checking our our work, it’s all at your fingertips, and keyboard too. The drop-down navigation bar along the top makes it easy to dig deeper into our site and get more information on specific systems or services or just to learn more about who we are.

Contacting Us

We’ve made it real easy to send us a message or request from virtually any page on our site. You can schedule a repair, maintenance or make a free estimate appointment right online. Every page has a convenient “Quick Contact” form to get what you need fast. When you scroll to the bottom of most pages there’s a “We can Help” button that takes you to our main contact page. And as mentioned above you can call us with one touch!

This new foundation is really just the beginning of what we want to do to make your experience of finding the right heating and air conditioning contractor easier and more enjoyable in 2013, and we hope you like it so far…

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