Category: HVAC

Letter Re: Propane Heat and PV Power Solutions for RVs and Trailers

James, I found this site in my search for a way to heat that travel trailer (that I don’t yet own). The guy with built his heating system for his RV out of a car’s heater core and attached it to PV panels for power of the pump motor and fan, the heating of the tank is [accomplished with] a propane [burner]. This might be something of interest to your readers as it’s something I’m going to need since the travel trailer I’m looking in to getting is older and needs a new heater. I figure why buy new or …


Letter Re: The “Invention Nation” Documentary Television Series

Jim, I don’t know if this has been posted here or not. I have finished watching a series on the Science Channel called “Invention Nation“. The show primarily feature inventors who are inventing ways to “go green”. Many of these inventions and ideas fit in perfectly with being self-sufficient. Some of the topics are; used cooking oil for diesel engines, solar power technology, passive solar for heating homes and water, bicycle generators, etc… The series will rerun starting in March and may be worth a look for the preparedness minded. See the Invention Nation web site. Thanks to you and …


The “Come as You Are” Collapse–Have the Right Tools and Skills

When the Second World War broke out in September, 1939, the United States had nearly two full years to ramp up military training and production before decisively confronting the Axis powers. In the late 1970s, looking at the recent experience of the 1973 Arab-Israeli War, the Pentagon’s strategic planners came to the realization that the next major war that the US military would wage would not be like the Second World War. There would not be the luxury of time to train and equip. They realized that we would have to fight with only what we had available on Day …


Letter Re: Burning Soft Maple Wood as a Primary Home Heat Source

Hi Jim, I have set out on an experiment in heating my home that has been interesting and is important to relay to other readers as their are many questions about using Soft Maple as a heat source. My experiment follows nearly a lifetime of wood burning, tree felling, splitting, chimney cleaning lifestyle and is of course not from a “professional”, so ask a professional when experimenting with home heating. I have used wood only heating in my current home for five years with 100% safety and 1,000% enjoyment. Before that, I had 11 years of consistent home heating by …


Letter Re: Light, Noise, and Smoke Discipline for Retreat Security

Sir: Ianto Evans has a book called “Rocket Mass Heaters”. He is a Welsh inventor, who was hired by the government of Guatemala to develop a less polluting wood stove for cooking. It also had to be more efficient. Basic physics tells you that exhaust heat is wasted energy. The smoke out of his stoves are cool enough to put your hand in front of, and they don’t emit visible smoke. They use much less wood as well and can be made for under $100. EndTimesReport.com has interesting articles on the importance of kerosene heaters, as a way to avoid …


Letter Re: Light, Noise, and Smoke Discipline for Retreat Security

Sir: I was reading your postings on light security and blackout curtains for a home that would be secure in the nighttime. I thought about it on my way home after work, and realize that you’re right. I’ve driven around my area during power outages and know who is home, due to their having generators running and lights shining, or even just those using candles or lanterns of various types. As I was pondering those things, I pulled into my driveway and looked at my home and a question popped up immediately. Here in the Northeast, (Maine) we’re in the …


Letter Re: Question on Two Cycle Oil Mixing Ratios

Dear Mr. Rawles, Perhaps you could help me understand the mixing ratios for two stroke oil. I remember buying the old Homelite oil, you could either buy it in a can to mix with one gallon of gas or a can to mix with two gallons of gas. Most of the new two stroke oils I have seen recently state that they are 50:1. Is this mixture acceptable for my old Homelite Super XL chainsaw and other two stroke equipment? The rep at the Stihl store by us said that the new oils are so much better formulated than the …


Letter Re: Useful LifeHacker Articles

Mr. Rawles: There are so many great and not-so-great ideas on the LifeHacker site including this one I found showing you how to use C cell batteries in place of a D cell compartment in an emergency situation: There are some other interesting things on this site like creating make-shift air conditioning systems using cold well water (others have made emergency air conditioners using beverage coolers, fans and copper coils): DIY Heat Exchanger and Make Your Own Air Conditioner. There is this one showing you how someone made hand washing more efficient while filling the tank of his toilet. [JWR …


Letter Re: Comments from a Like-Minded Virginia Prepper

Sir: I found your blog about a month ago. I received a copy of your novel “Patriots” from Fred’s M14 Stocks and have probably read the thing about 20 times. It sits by the bed. I sometimes just pick it up, open and begin reading. Good stuff. I am a former police officer (10 years) with sniper training, construction company owner( I have built everything except a church) CPA with many years public accounting and have military experience (like you in Military Intelligence. I was what is now known as a 98C [- Signals Intelligence Analyst]). I shoot a lot …


Reducing Your Sound “Footprint” by Countrytek

I’ve been lurking about SurvivalBlog for about six months now, and have found a lot of useful information hereabouts. There are lots of good tips about securing your retreat and making it less visible. One thing I have noticed though is that there appears to be a blind spot. Why go to all the trouble to screen your retreat location from view and practice nighttime light discipline if you are going to announce your presence far and wide audibly? One thing I’ve noticed lately is there is a lot of discussion on stocking up on two-cycle and bar oil for …


Letter Re: Masonry Stoves / Brick Ovens

Jim I have been reading the SurvivalBlog for some time now and thought I would share some information about a retreat technology that I have not seen mentioned. I am referring to a brick oven for baking bread, pizza and a large variety of other foods. Brick ovens have been around for thousands of years, they were very common in Roman times. They are having a revival in the artisan baking community and can also be found in many authentic pizza restaurants. They do take a little work to construct, however it is very simple to operate (decidedly low tech) …


Letter Re: Firefighting Equipment for Rural Homes and Retreats, and Comments of Geothermal Heating

Hi Jim, I thought it prudent to add a bit to Mr. Savage’s fire fighting equipment article. It touches two topics worth mentioning. In the article, Mr. Savage recommends a fire truck, bladder, tank, etc… for firefighting. I have no problem with this unless it is winter. Trying to pump this much water on as “as need” basis in the event of a fire is obviously not going to work as well. Storing the water in a “non-potable” type container clearly marked, one could add the appropriate amount of RV antifreeze to the tank to keep from bursting your firefighting …


Two Letters Re: Advice on Enhancing Cool Basement Food Storage

James: For those looking to create stable and “passively” cool storage in a basement, the book “How and Why to Build a Wine Cellar” by Richard Gold is a well-thought, meticulously engineered solution to many of the same issues faced by those seeking to store food at stable, cool temperatures. Regards, – Ben JWR: I have spent much of my adult life in the construction industry and through experience and educational seminars, etc. I have acquired a substantial amount of knowledge concerning moisture intrusion into structures. Water is the main source of problems in construction. Keeping it in, keeping it …


Letter Re: Advice on Enhancing Cool Basement Food Storage

Mr. Rawles: We are building a new house with a basement. I am planning a food storage room in the corner of the basement that is the furthest underground. Can you guide me with details about how to plan that room, mainly about temperature. I know that cooler is better. The basement has poured cement walls. Should I insulate the [other] two walls [that are partitions] inside the basement? The rest of the basement will be heated, should I leave the vents out of that room all together? What about the vent that pulls air in for circulation? We are …


Letter Re: Advice on Where to Learn Practical, Tactical Skills

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Dear Jim: As my confidence in the dollar depreciates and my desire for skills increases, I’m wanting to convert FRNs into hands-on knowledge. What weeknight or weekend workshops would you recommend? Are there any places where you can learn Army Ranger skills without joining the military? Animal husbandry, and so on? – Spencer JWR Replies: There is a tremendous wealth of free or low-cost classes available–enough to keep you busy every weekend of the year if you are willing to drive a distance. If you have time and just a bit of money, you can get some very well-rounded training …